The total lifetime of the Sun is estimated to be about 10 billion years.
It is currently about 4.6 billion years old, so it has roughly 5 billion years left until it exhausts the hydrogen fuel in its core and starts to evolve into a red giant. During the red giant phase, the Sun will expand to a size that may reach beyond the current orbit of Earth and will become much brighter. This phase is expected to last for about 1 billion years.
Eventually, the Sun will shed its outer layers and become a compact, hot object known as a white dwarf. This final phase is expected to last for trillions of years. So in total, the Sun's lifetime is estimated to be about 10 billion years until it exhausts its fuel and starts to evolve, and then trillions of years as a white dwarf.
To know more about sun, here
brainly.com/question/2526507
#SPJ4
a 5100 kg open train car is rolling on frictionless rails at 25 m/s when it starts pouring rain. rain falls vertically. a few minutes later, the car's speed is 23 m/s . What mass of water has collected in the car?
111.3 kg of water have accumulated inside the car
Let us assume that the mass of water accumulated is m′. As a result, the total mass of the train-car plus the water is m + m′. The momentum of the total mass before rain = momentum of the total mass after rain. Momentum of the train before rain, p1 = mv1 Momentum of the train after rain, p2 = (m + m′) v2 .Applying the principle of conservation of momentum,p1 = p2m v1 = (m + m′) v2.
The mass of water is calculated using the above equation.
m′ = [m v1 - m v2]/v2m′ = m (v1 -v2)/v2 Substitute m = 5100 kg, v1 = 25 m/s, and v2 = 23 m/s in the above equation.
m′ = (5100 × (25 - 23))/23m′ = 111.3 kg
Therefore, the mass of water accumulated in the car is 111.3 kg.
To know more about principle of conservation of momentum click on below link :
https://brainly.com/question/30582604
#SPJ11
in an alternating current circuit that contains a resistor a inductor and a capacitor with 120v how do you find current
In an alternating current circuit that contains a resistor, an inductor, and a capacitor with 120V, you can find the current by using Ohm's Law.
Ohm's Law states that the current is equal to the voltage divided by the resistance.
To calculate the resistance in an alternating current circuit, you must take into account the resistor, inductor, and capacitor.
For example, if the resistor has a resistance of 10 ohms, the inductor has a resistance of 5 ohms, and the capacitor has a resistance of 20 ohms, then the total resistance would be 35 ohms.
Therefore, the current in the circuit would be 120V/35 ohms = 3.43A.
To know more about Ohm's Law, refer here:
https://brainly.com/question/1247379#
#SPJ11
an asteroid orbits the sun in a highly elliptical orbit. as the asteroid gets closer to the sun, how are the total mechanical energy and gravitational potential energy of the asteroid-sun system changing, if at all?
The total mechanical energy and gravitational potential energy of the asteroid-sun system will change.
Asteroid-sun systemAs the asteroid gets closer to the sun in its highly elliptical orbit, both the total mechanical energy and gravitational potential energy of the asteroid-sun system will change.
The total mechanical energy of the asteroid-sun system is the sum of its kinetic energy and gravitational potential energy. As the asteroid moves closer to the sun, its kinetic energy will increase due to the increase in speed, but its gravitational potential energy will decrease due to the decrease in distance from the sun. Therefore, the total mechanical energy of the asteroid-sun system will remain constant, according to the law of conservation of energy.
However, if the asteroid encounters any gravitational forces or other external forces, such as a collision with another object or a thrust from a spacecraft, its mechanical energy can change.
More on asteroids can be found here: https://brainly.com/question/19161842
#SPJ1
explain the use of air bags and seat belts in terms of momentum and impulse. please provide examples (and calculations) to elaborate your concepts.
Answer:
Explanation:
A seatbelt is designed to stretch a bit when the car decelerates rapidly. You travel forward a little while being stopped - you do not stop sharply as you would if you hit the dashboard. The seatbelt stretching increases the time over which your momentum is changed, thereby decreasing the force experienced by your body.
Airbags are made from a strong coated fabric. They are stored in a module mounted on the steering wheel and dashboard and side panels of the car. The inflation of them is initiated by crash sensors that activate upon impact at speeds of more than 10-15 miles per hour. They are mounted in several locations on the car body. In a crash, the sensor sends an electrical signal to the airbag which then causes the airbag to deploy. It ignites a chemical propellant which produces nitrogen gas, which then inflates the bag itself.
an electric eel can generate a 278-v, 0.8-a shock for stunning its prey. what is the eel's power output?
The electric eel's power output is 222.4 Watts
Given voltage (V) = 278 V
Current (I) = 0.8 A
To find the electric eel's power output, we have to use the formula
P = IV,
Where P is the power output, I is current, and V is the voltage.
So, we can calculate the electric eel's power output as follows:
Power Output (P) = IVP
⇒278 × 0.8
Power Output (P) = 222.4 Watts
Hence, The power output of the electric eel is 222.4 Watts.
To know more about "power output": https://brainly.com/question/866077
#SPJ11
200 g 20 g, Sketch free-body then calculate the acceleration of the trolley. (7)
The acceleration of the trolley is acceleration = (220 g) / m.
Short answer: What is acceleration?What is acceleration defined as, the rate of change of velocity with respect to time. As acceleration has both a magnitude and a direction, it is a vector quantity. It is also the first derivative of velocity or the second derivative of position with respect to time.
Total force = 200 g + 20 g
= 220 g
where the acceleration brought on by gravity, or g, equals (9.8 m/s²).
We may now use Newton's second law of motion, which states that an object's net force is equal to its mass times its acceleration:
Net force = total force
= 220 g
Mass of the trolley is not given in the problem. Let's assume that it is m.
m * acceleration = 220 g
Solving for acceleration, we get:
acceleration = (220 g) / m
To know more about acceleration visit:-
brainly.com/question/12550364
#SPJ9
Question:
A trolley is being pulled by a force that is equal to the weight of two masses, one with a weight of 200 g and the other with a weight of 20 g. Sketch a free-body diagram of the trolley and calculate its acceleration assuming there is no friction or resistance acting on it. (7)
Assume that the trolley is on a flat, level surface and is not initially moving. Additionally, assume that the weight units are in grams.
al is floating freely in his spacecraft, and you are accelerating away from him with an acceleration of 9.8 m/s2. how will you feel in your spacecraft? group of answer choices you will feel weight, but less than on earth. you will feel yourself pressed against the back of your spaceship with great force, making it difficult to move. you will feel the same weight as you do on earth. you will be floating weightlessly. you will feel weight, but more than on earth.
You will feel yourself pressed against the back of your spacecraft with great force, making it difficult to move. This is because when you accelerate, the force of gravity is increased, causing you to feel an increased weight.
This option is the correct one. As per Newton's second law, the force of the body is directly proportional to the mass and acceleration. Here, the acceleration is 9.8 m/s2, which means you will feel yourself pressed against the back of your spaceship with great force, making it difficult to move, you will feel the same weight as you do on earth.
This is an incorrect option because the acceleration is greater than 1g, which means the weight will be greater than the actual weight.you will be floating weightlessly. This is an incorrect option because there is an acceleration, which means you will not be floating weightlessly.you will feel weight, but more than on earth. This is an incorrect option because the acceleration is greater than 1g, which means the weight will be greater than the actual weight.
Read more about force:
https://brainly.com/question/12785175
#SPJ11
if the rate of internal energy dissipation in a battery is 1.0 watt, and the current produced by the battery is 0.50 amps, what is the internal resistance of the battery?
If the rate of internal energy dissipation in a battery is 1.0 watt, and the current produced by the battery is 0.50 amps, the internal resistance of the battery can be calculated using Ohm's law. Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. The proportionality constant is called the resistance of the conductor, which is expressed mathematically as V = IR, where V is the voltage, I is the current, and R is the resistance.
The power dissipated by the internal resistance of a battery is given by P = I2R, where P is the power, I is the current, and R is the internal resistance. The rate of internal energy dissipation in the battery is given as 1.0 watt, and the current produced by the battery is given as 0.50 amps.
Using Ohm's law, we can calculate the voltage across the battery as V = IR = 0.50 x R. Therefore, the power dissipated by the internal resistance of the battery is P = I2R = (0.50)2 x R = 0.25R.
Equating the power dissipated by the internal resistance of the battery to the rate of internal energy dissipation, we get:
0.25R = 1.0
Solving for R, we get:
R = 1.0/0.25 = 4 ohms.
Therefore, the internal resistance of the battery is 4 ohms.
Internal energy dissipation is the energy that is lost due to friction or resistance in a system. In the case of a battery, internal energy dissipation refers to the energy that is lost due to the internal resistance of the battery. The internal resistance of a battery is a measure of how much energy is lost due to the resistance of the battery's internal components. The higher the internal resistance of the battery, the more energy is lost as heat, which reduces the battery's efficiency.
To know more about Internal energy dissipation refer here:
https://brainly.com/question/15331125#
#SPJ11
(a) calculate the (time-averaged) energy density of an electromagnetic plane wave in a conducting medium. show that the magnetic contribution always dominates (b) show that the intensity is (k/2uw)e0^2
(a)The time-averaged energy density is:U = (1/2μ) |E x B|² = (1/2μ) E₀² B₀² sin²(kx - ωt).
(b)The intensity of an electromagnetic wave is defined as the time-averaged power per unit area. It can be calculated using the Poynting vector: I = <S> = (1/2μ) |E x B|².
S = (1/μ) E x B
where E is the electric field, B is the magnetic field, and μ is the permeability of the medium. In a conducting medium, the permeability is generally the same as that of free space, so μ = μ0.
The time-averaged energy density is then given by:
U = (1/2μ) |E x B|^2
where |E x B| is the magnitude of the cross product of the electric and magnetic fields. Since the cross product of two vectors is orthogonal to both vectors, |E x B| represents the strength of the electromagnetic field.
In a plane wave, the electric and magnetic fields are perpendicular to each other and to the direction of propagation. Without loss of generality, let's assume that the electric field is in the x-direction and the magnetic field is in the y-direction. Then we have:
E = E₀ sin(kx - ωt) i
B = B₀ sin(kx - ωt + π/2) j
where E₀ and B₀ are the amplitudes of the fields, k is the wave vector, ω is the angular frequency, and i and j are unit vectors in the x- and y-directions, respectively.
Taking the cross product of E and B, we have:
E x B = E₀ B₀ sin(kx - ωt) k
Therefore, the time-averaged energy density is:
U = (1/2μ) |E x B|² = (1/2μ) E₀² B₀² sin²(kx - ωt)
Since the sine function oscillates between -1 and 1, the maximum value of sin^2(kx - ωt) is 1. Therefore, the maximum value of the energy density is:
Umax = (1/2μ) E₀² B₀²
Note that the energy density is proportional to both the electric and magnetic field strengths. However, the permeability of a conducting medium is generally less than that of free space, which means that the magnetic field is amplified relative to the electric field. This leads to a situation where the magnetic contribution to the energy density dominates over the electric contribution.
(b) The intensity of an electromagnetic wave is defined as the time-averaged power per unit area. It can be calculated using the Poynting vector:
I = <S> = (1/2μ) |E x B|²
where the brackets denote a time average.
The energy density U is related to the intensity I by:
U = I/ω
where ω is the angular frequency. Substituting the expression for U from part (a), we have:
I/ω = (1/2μ) E₀² B₀²
Solving for I, we obtain:
I = (ω/2μ) E₀² B₀²
Recall that the speed of light in a medium is given by:
v = 1/√(με)
where ε is the permittivity of the medium. Therefore, the wave number k and the angular frequency ω are related by:
k = ω/v = ω√(με)
Substituting this expression into the expression for I, we have:
I = (k/2uw) E₀²
Click the below link, to learn more about electromagnetic plane wave :
https://brainly.com/question/29763072
#SPJ11
a supernova explosion of a 3.2 x1031 kg star produces 1.0 x1044 j of energy. (a) how many kilograms of the star's mass are converted to energy in the explosion?
The amount of the star's mass converted to energy in the explosion is 1.11 x 10^27 kg.
Calculating energy:
The mass-energy equivalence equation is used to calculate the mass that is converted to energy during a supernova explosion of a 3.2 x 10^31 kg star, producing 1.0 x 10^44 J of energy.
According to Einstein's mass-energy equivalence equation: E = mc² where, E = energy, m = mass, and c = speed of light This equation expresses the relationship between the mass of an object and the amount of energy that can be released from it.
So, to determine the mass that is converted to energy during the supernova explosion, we need to rearrange the equation as m = E/c². Now we have the following data: E = 1.0 x 10^44 Jc = 3.0 x 10^8 m/s² (speed of light). Substitute these values into the equation to get: m = E/c²m = (1.0 x 10^44 J)/(3.0 x 10^8 m/s)²m = 1.11 x 10^27 kg
Therefore, the supernova explosion of a 3.2 x 10^31 kg star converts 1.11 x 10^27 kg of its mass to energy.
To know more about supernova explosions, visit:
https://brainly.com/question/14018571
#SPJ11
this solenoid must be 1.40 m long and 20.0 cm in diameter. if you have 2513.3 m of wire, how many turns of wire can you include in your solenoid?
To calculate the number of turns of wire included in the solenoid, use the following formula the value is 80000.
As the given data is : Number of turns = Length of wire / (π x Diameter of solenoid), For this example, that would be:, Number of turns = 2513.3 m / (3.14 x 0.20 m) = 39,755.56 turns. Solenoid length(l) = 1.4 m Diameter of solenoid (d) = 20 cm = 0.2 m Length of wire = 2513.3 m.
The formula of the solenoid, the Number of turns of the solenoid is given by; N=Length of wire /(Pi*d^2/4)L = 2513.3 m Diameter of the solenoid (d) = 0.2 m. Putting the values in the above equation, we get; N = 2513.3 / (3.14 * 0.2^2 / 4)N = 2513.3 / (3.14 * 0.04 / 4)N = 2513.3 / 0.0314N = 80000 turnsTherefore, the number of turns of wire that can be included in the solenoid is 80000.
Read more about solenoids:
https://brainly.com/question/1873362
#SPJ11
torque does ignoring the mass significantly effect the value you calculate for the force exerted by the triceps? explain why or why not. triceps
When calculating the force exerted by the triceps, ignoring the mass significantly affects the torque value.
The torque is the product of the force and the distance from the force application point to the axis of rotation.
Torque= force*distance (N m)
The torque calculation for a muscle depends on the point of attachment of the muscle. Muscle mass is related to its force production capacity, and it is necessary to consider it when calculating the force applied by the triceps.
However, the force exerted by the triceps muscle would be affected by the mass of the object being lifted or moved. The force required to move an object increases with the mass of the object. Therefore, ignoring the mass of the object would result in an underestimate of the force required to move the object, and thus an underestimate of the force exerted by the triceps.
In summary, ignoring the mass of the object being lifted or moved would not significantly affect the calculated value of torque, but it would affect the calculated value of force.
To know more about the "torque": https://brainly.com/question/20691242
#SPJ11
a box with a mass of 50 kg is accelerating to the right because of an applied force of 250 n friction between the box and the surface below is negligible. what is the acceleration? (in meters/sec2)
The acceleration of a box with a mass of 50 kg that is accelerating to the right due to an applied force of 250 N and with negligible friction between the box and the surface below is 5 m/s².
Acceleration is defined as the rate of change of velocity of a moving object over time. The magnitude of the velocity of the object changes at a constant rate as a result of acceleration. The acceleration of an object may be calculated using the following formula:
a = (Fnet)/m
where Fnet is the net force acting on the object, and m is the object's mass.
Therefore, using the formula;
a = (Fnet)/m
where m = 50 kg and Fnet = 250 N,
Therefore;
a = 250 N / 50 kg
a = 5 m/s²
Thus, the acceleration of the box is 5 m/s².
Learn more about acceleration at https://brainly.com/question/25749514
#SPJ11
As a boat moves through water, it experiences drag, which is similar to air resistance. Does drag slow the boat down or speed it up?
Answer:
Whether the object or fluid is moving, drag occurs as long as there is a difference in their velocities. Because it is resistant to motion, drag tends to slow down the object. An effective way to reduce it is to alter the shape of the object and make it streamline. Drag Force Examples of Drag Force
Explanation:
a person trying to lose weight (dieter) lifts a 10 kg mass, one thousand times, to a height of 0.5 m each time. assume that the potential energy lost each time she lowers the mass is dissipated, (a) how much work does she do against the gravitational force? (b) fat supplies 3.8 x 107j of energy per kilogram which is converted to mechanical energy with a 20% efficiency rate. how much fat will the dieter use up?
A dieter lifting a 10 kg mass 1000 times to a height of 0.5m each time does 49.05 J of work per lift, resulting in the total amount of work done and fat burned is calculated by total amount of energy.
(a) The amount of work done against the gravitational force is calculated by using the formula:
W = m*g*h
where m is the mass,
g is the acceleration due to gravity, and
h is the height.
The person lifts a 10 kg mass to a height of 0.5 meters, so the work done each time is:
[tex]W = (10 kg) * (9.8 m/s^2) * (0.5 m) = 49 Joules.[/tex]
The total work done against the gravitational force is:
[tex]W_{total}= (49 J) * (1000) = 49,000 J.[/tex]
(b) To calculate the amount of fat burned, we need to find the total amount of energy expended and divide it by the efficiency rate and the energy per kilogram of fat.
The total amount of energy expended by the person is:
[tex]E_{total} = W_{total} = 49,000 J.[/tex]
The efficiency rate is 20%, which means that 20% of the expended energy is converted to mechanical energy.
The energy per kilogram of fat is [tex]3.8*10^7[/tex] Joules/kg.
Therefore, the amount of fat burned is:
Fat burned = [tex]E_{total}[/tex] / (efficiency rate * energy per kg of fat)
Fat burned = 49,000 J / (0.2 * 3.8 x 10⁷ J/kg)
Fat burned = 0.0645 kg of fat (or 64.5 grams of fat).
So, the person will burn approximately 64.5 grams of fat by lifting a 10 kg mass 1000 times to a height of 0.5 meters each time.
Also the total work done against gravitational force is 49,000J.
To Practice for 'mechanical energy':
https://brainly.com/question/29803154
#SPJ11
Drag each label to the correct location on the chart.
Sort the statements based on whether the described outcomes result from thermal energy being added or being removed.
Particles move faster.
Particles move slower.
Temperature increases.
Temperature decreases.
Kinetic energy increases.
Kinetic energy decreases.
those are the options
The outcomes based on whether thermal energy is added or being removed are:
Thermal energy added :
Particles move fasterTemperature increasesKinetic energy increasesThermal energy being removed :
Particles move slower.Temperature decreases.Kinetic energy decreasesHow does thermal energy affect particles, temperature and kinetic energy ?When thermal energy is added to a substance, the particles absorb this energy and start moving faster, which means their kinetic energy increases. This leads to an increase in temperature because the faster-moving particles collide with each other more frequently, transferring this extra energy in the form of heat.
Therefore, an increase in temperature and an increase in the kinetic energy of particles result from thermal energy being added, while a decrease in temperature and a decrease in the kinetic energy of particles result from thermal energy being removed.
Find out more on thermal energy at https://brainly.com/question/30779509
#SPJ1
how would the escape velocity of earth change if the earth suddenly became more dense and became 25 times more massive (but kept its size)?
The escape velocity of Earth would increase significantly (25 times) if it became 25 times more massive but kept its size. This is because escape velocity is determined by the ratio of mass to radius - increasing the mass of the Earth would cause a proportionate increase in escape velocity.
To calculate the escape velocity of a planet, the equation v = sqrt[2GM/r] can be used, where G is the gravitational constant (6.67x10-11 m3 kg-1 s-2), M is the mass of the planet (25 times greater in this example) and r is the radius of the planet (unchanged in this example).
Escape velocity is calculated based on the mass and radius of an object. As the mass of an object increases, the escape velocity increases. This means that if the Earth's mass increases by 25 times, its escape velocity will increase as well.
To calculate the escape velocity, we use the formula: Escape Velocity = sqrt(2GM/r), where G is the gravitational constant (6.67408 x 10^-11 m^3 kg^-1 s^-2), M is the mass of the object, and r is the radius of the object. In this case, if the Earth's mass increases by 25 times, the escape velocity will increase by 25 times as well. This means that the new escape velocity of the Earth would be 25 times the original value.
For more questions related to escape velocity.
https://brainly.com/question/14297933
#SPJ11
horses that move with the fastest linear speed on a merry-go-round are located anywhere, because they all move at the same speed. near the center. near the outside.
Horses that move with the fastest linear speed on a merry-go-round are located near the outside.
A merry-go-round is an amusement park ride that comprises a rotating circular platform equipped with seats or mounts for people to ride on. When the ride is operating, the circular platform rotates around a fixed central axis at a constant velocity, while the people on it rotate with the platform. Linear speed refers to the velocity of the object in a straight line path, regardless of its direction of movement.
Therefore, the linear speed of the mounts on the merry-go-round depends on the radius of the circular path they move on. The closer the horse is to the center, the shorter the path it has to cover during one rotation of the platform, meaning it has a slower linear speed. Conversely, the farther the horse is from the center, the longer the path it has to cover, hence it has a faster linear speed. As a result, the mounts located near the outside of the merry-go-round move with the fastest linear speed.
Learn more about the linear speed at:
https://brainly.com/question/12707353
#SPJ11
determine the limit on the series resistance so the energy remaining after one hour is at least 85 percent of the initial energy.
The limit on the series resistance so that the energy remaining after one hour is at least 85 percent of the initial energy, is initial energy into 85% by the voltage.
Ohm's Law states that the current in a circuit is directly proportional to the voltage and inversely proportional to the resistance.
Therefore, the total resistance in a circuit can be calculated using the formula: R = V/I
The energy remaining after one hour must be at least 85 percent of the initial energy, we can calculate the resistance by rearranging the formula.
The total resistance can be determined by multiplying the initial energy by 85 percent and dividing it by the voltage. Thus, the limit on the series resistance is [tex]R = (Initial Energy *0.85) / V[/tex].
To learn more about the series resistance:
https://brainly.in/question/28887091
#SPJ11
at what angle relative to the incoming direction is the ray reflected from the first interaction with the surface of the diamond?
The angle at which the ray is reflected from the first interaction with the surface of the diamond is known as the angle of reflection. When a light ray hits a surface, it reflects back at the same angle as the angle of incidence.
What is the angle of incidence?
The angle between the incident ray and the normal ray is called the angle of incidence. The incident ray is the ray of light that falls on the surface, while the normal is an imaginary line perpendicular to the surface. The angle of incidence can be calculated by measuring the angle between the incident ray and the normal.
The angle between the reflected ray and the normal ray is known as the angle of reflection. When a light ray hits a surface, it reflects back at the same angle as the angle of incidence. Therefore, the angle of reflection can be calculated by measuring the angle between the reflected ray and the normal.
In summary, the angle at which the ray is reflected from the first interaction with the surface of the diamond is the angle of reflection, which is equal to the angle of incidence. Therefore, the ray is reflected at the same angle as the angle at which it strikes the diamond's surface.
To know more about the angle of incidence:
https://brainly.com/question/14221826
#SPJ11
gwhen a person steps forward out of a small boat onto a dock, the boat recoils backward in the water. why does this occur?
Answer:
Explanation:
Durante as aulas, os estudantes da 3ª série deveriam escolher uma entre as três atividades físicas possíveis, sendo elas: natação, futsal e dança. Na turma, 25% escolheram dança, 15% escolheram natação, e os outros 24 estudantes escolheram futsal. Podemos afirmar que, nessa turma, existe um total de:
A) 64 alunos
B) 55 alunos
C) 48 alunos
D) 45 alunos
E) 40 alunos
a 12- cm -long spring is attached to the ceiling. when a 2.2 kg mass is hung from it, the spring stretches to a length of 18 cm (a) What is the spring constant k?
When a 2.2 kg mass is hung from a 12 cm long spring attached to the ceiling, the spring stretches to a length of 18 cm. The spring constant k is 359.7 N/m.
We can use Hooke's law to solve for the spring constant:
F = -kx
where F is the force applied to the spring, x is the displacement of the spring from its equilibrium position, and k is the spring constant.
In this case, the weight of the mass is the force applied to the spring:
[tex]F = mg = (2.2\ kg)(9.81\ m/s^2) = 21.582 \ N[/tex]
The displacement of the spring is the difference between its stretched and unstretched lengths:
[tex]x = 18 \ cm - 12 \ cm = 0.06 \ m[/tex]
Substituting these values into Hooke's law:
[tex]21.582 \ N = -k(0.06 \ m)[/tex]
Solving for k:
[tex]k = -21.582 \ N / (0.06 \ m) = -359.7 \ N/m[/tex]
The negative sign indicates that the spring exerts a restoring force in the opposite direction to the displacement.
Therefore the spring constant of the spring is 359.7 N.
Learn more about spring constant:
https://brainly.com/question/28203351
#SPJ11
if a test point is marked 5 volts and a sedond test point is marked -3.3 volts. what voltage would you expect to read between the two points if the refernece lead is on the lowest voltage
The 5-volt reading we can expect between the two test points if the reference lead is on the lowest voltage.
The given data is as follows:
The first test marked voltage = 5 volts
The second test marked voltage = -3.3 volts
Let us assume that the two test points are there is a conductive track between them, the voltage between the two points can be calculated using the voltage difference between the two test points.
The voltage difference between the two test points is calculated as:
5 volts - (-3.3 volts) = 8.3 volts
If the reference lead is on the lowest voltage, It means that the negative side of the voltmeter is attached to the test point with the lower voltage which is -3.3 volts.
The voltage difference between the two test points is
8.3 volts - 3.3 volts = 5 volts
Therefore we can conclude that the 5-volt reading we can expect between the two test points.
To learn more about voltage
https://brainly.com/question/14291865
#SPJ4
a force f applied to an object of mass m1 produces an acceleration of 7.36 m/s2. the same force applied to a second object of mass m2 produces an acceleration of 2.62 m/s2. what is the value of the ratio m1/m2?
The value of the ratio m1/m2 is approximately 0.3559.
Given that a force F applied to an object of mass m1 produces an acceleration of 7.36 m/s², and the same force applied to a second object of mass m2 produces an acceleration of 2.62 m/s².To find the value of the ratio m1/m2, we can use the equation: F = ma Where, F = force m = mass a = acceleration. We have F and a for both objects, and we need to find the ratio of masses m1/m2.Let's write the equation for both objects and then divide the two equations:For object 1:F = m1a1------------------------(1)For object 2:F = m2a2------------------------(2)Dividing the equation (1) by equation (2):m1a1/m2a2 = m1/m2 = (F/m1a1)/(F/m2a2)= (m2a2/F)/(m1a1/F)Now, substituting the values of a1, a2, and F, we get:m1/m2 = (m2 x 2.62)/(m1 x 7.36)= 2.62m2/7.36m1= 0.3559(m2/m1)Therefore, the value of the ratio m1/m2 is approximately 0.3559.
Learn more about Ratio
brainly.com/question/13419413
#SPJ11
what magnitude force is required to give a helicopter of mass m an acceleration of 0.10g upward? express your answer in terms of the variable m and appropriate constants.
Magnitude of the force required to give the helicopter an acceleration of 0.10g upward is 0.981m N, where m is the mass of the helicopter in kilograms.
What is force?Physical quantity which causes or tends to cause a motion in any object at rest or changes or tends to change the direction of motion of a moving object or shape or size of object is called force.
Force required to give a helicopter of mass m an acceleration of 0.10g upward can be calculated using Newton's second law. Here, the acceleration is 0.10g, which can be expressed as:
a = 0.10g = 0.10 * 9.81 m/s² = 0.981 m/s²
F = ma
F = m * 0.981
Therefore, magnitude of the force required to give the helicopter an acceleration of 0.10g upward is 0.981m N, where m is the mass of the helicopter in kilograms.
To know more about force, refer
https://brainly.com/question/12970081
#SPJ1
a typical television remote control emits radiation with a wavelength of 938 nm. what is the frequency (in 1/s) of this radiation?
The typical television remote control emits radiation with a wavelength of 938 nm having a frequency of [tex]3.20 \times 10^{14} s^{-1}[/tex].
The frequency of this radiation can be determined using the formula λν = c, where λ is the wavelength, ν is the frequency, and c is the speed of light in a vacuum.
The speed of light is approximately 3.00 × 10^8 m/s. The wavelength of the radiation in meters is given by:
938 nm = 938 × 10^-9 m
So, λ = 938 × 10^-9 m.
Substituting this value and the value of c in the formula, we have:
938 × 10^-9 m × ν = 3.00 × 10^8 m/s
Solving for ν gives:
ν = (3.00 × 10^8 m/s) / (938 × 10^-9 m) = 3.20 × 10^14 s^-1
Therefore, the frequency of the radiation emitted by the typical television remote control is 3.20 × 10^14 s^-1 (or Hertz).
Learn more about frequency:
https://brainly.com/question/254161
#SPJ11
some music has a slow-moving pulse and some music has a fast-moving pulse. the speed at which the pulse moves in music is known as its
The speed at which the pulse moves in music is known as its tempo. Tempo is measured in beats per minute (BPM) and is the speed of the underlying pulse of a piece of music.
Tempo is the speed at which a piece of music is played. It is measured in beats per minute (BPM), and it affects the overall mood of a piece of music. The tempo of a piece of music is typically determined by the composer, but it may also be affected by the performer's interpretation. Different types of music have different tempos; for example, a ballad may have a slow tempo, while a dance tune may have a fast tempo.
The speed at which the pulse moves in music is known as its tempo. Tempo can vary significantly between pieces and is often indicated in a piece's score with the terms allegro (fast), moderato (moderate) or largo (slow).
In music, the pulse refers to the beat that you can feel in the music. It is the underlying rhythm that keeps the music moving forward. The pulse is usually created by the drums or other percussion instruments in the music, but it may also be created by other instruments or by the vocals. Different types of music have different pulses; for example, a ballad may have a slow-moving pulse, while a dance tune may have a fast-moving pulse.
For more such questions on tempo , Visit:
https://brainly.com/question/3451676
#SPJ11
a spaceship has a rest mass of 660,000 tons. if you could measure its mass when it was traveling at half the speed of light, what would the value be?
The mass of the spaceship when it is traveling at half the speed of light would be approximately 6.91 x 10¹¹ kg.
The spaceship's mass at half the speed of light can be calculated using the formula:
m = m₀ / √(1 - v²/c²)
where m = mass at speed v, m₀ = rest mass, v = velocity, and c = speed of light.
The rests mass of the spaceship is 660,000 tons, which we can convert to kilograms by multiplying by 907,185 (1 ton = 907,185 kg).
So, m₀ = 660,000 * 907,185
= 5.98 x 10¹¹ kg.
The spaceship is traveling at half the speed of light, which we can express as v = 0.5c, where c = 299,792,458 m/s. Plugging these values into the equation, we get:
m = m₀ / √(1 - v²/c²)
m = (5.98 x 10¹¹ kg) / √(1 - (0.5c)²/c²)
m = (5.98 x 10¹¹ kg) / √(1 - 0.25)
m = (5.98 x 10¹¹ kg) / √(0.75)
m = (5.98 x 10¹¹ kg) / 0.866
m = 6.91 x 10¹¹ kg
Learn more about the speed of light here:
https://brainly.com/question/104425
#SPJ11
determine if the drag force exerted on an object moving through air (a.k.a. force of air resistance) is proportional to the velocity or the square of the velocity of the object.
The drag force exerted on an object moving through air (a.k.a. force of air resistance) is proportional to the square of the velocity of the object.
Thus, the correct answer is proportional to the square of the velocity of the object.
What is the drag force?The аir resistаnce force аcting on аn object moving through аir is referred to аs drаg force. When а body trаvels through а fluid such аs wаter or аir, it fаces resistаnce to its motion, which is proportionаl to the velocity of the object. This resistаnce force аcting on а body moving through аir is referred to аs аir resistаnce or drаg force.
The drаg force on аn object in the аir is proportionаl to the squаre of the object's velocity. When the velocity of the object is doubled, the drаg force becomes four times greаter. Thus, the drаg force grows fаster thаn the object's velocity. In other words, the drаg force аcting on аn object increаses аs the squаre of the object's velocity.
For more information about drаg force refers to the link: https://brainly.com/question/12774964
#SPJ11
tome the cat is chasing jerry the mouse across a table surface 1.5 m high. jerry steps out of the way at the last second, and tom slides off the edge of the table at a speech of 5 m/s. where will tom strike the floor?
Tom will strike the floor at a distance of 1.28 m from the edge of the table.
Tom the cat is chasing Jerry the mouse across a table surface that is 1.5 m high. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 5 m/s. The position of Tom at different times can be analyzed by applying the kinematic equations. Tom is in free fall and his motion is governed by the equations of motion under gravity. Therefore, his initial velocity is zero, and acceleration due to gravity is -9.8 m/s². Let’s use the second equation of motion to calculate the time required for Tom to hit the ground.
v = u + at Where, v = final velocity = 0 m/s, u = initial velocity = 5 m/s, a = acceleration = -9.8 m/s², t = time taken
Solving for t, we get
0 = 5 + (-9.8)t
t = 0.51 s
Therefore, it takes 0.51 s for Tom to hit the ground. The distance traveled by Tom before hitting the ground can be calculated using the third equation of motion.
s = ut + ½ at² Where, s = distance traveled, u = initial velocity = 5 m/s, a = acceleration = -9.8 m/s², t = time taken = 0.51 s
Solving for s, we get
s = 5 × 0.51 + ½ (-9.8) × (0.51)²
s = 1.28 m
Therefore, Tom will strike the floor at a distance of 1.28 m from the edge of the table. The motion of Tom is an example of projectile motion because he is in free fall and there is no horizontal acceleration acting on him. Projectile motion is a type of motion where an object is thrown near the earth’s surface and moves along a curved path under the action of gravity.
For more such questions on Projectile motion.
https://brainly.com/question/11049671#
#SPJ11