The electric field in the copper wire is approximately 0.0227 V/m.
The drift velocity of free electrons in a copper wire is related to the electric field in the conductor by the following formula,
v_d = (e * E * τ) / m
where v_d is the drift velocity, e is the charge of an electron, E is the electric field strength, τ is the relaxation time of the electrons, and m is the mass of an electron.
Solving for E, we get,
E = (m * v_d) / (e * τ)
Substituting the given values for copper, we get,
E = (9.11 x 10^-31 kg * 7.94 x 10^-4 m/s) / (1.60 x 10^-19 C * 2.0 x 10^-14 s)
E = 0.0227 V/m (rounded to four significant figures)
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Need help with this (Homework)
Answer:
1. goes to B.
2. goes to D.
3. goes to A.
4. goes to C.
I had to do this in 8th grade so if im wrong sorry.
If im right please mark me brainliest
a record turntable is rotating at 33 1 3 rev/min. a watermelon seed is on the turntable 7.3 cm from the axis of rotation. (a) calculate the acceleration of the seed, assuming that it does not slip. (enter the magnitude.)
Assuming that it does not slip, the acceleration of the seed is 0.89 m/s².
The acceleration of the seed can be calculated using the formula for centripetal acceleration:
a = (v²) / r
where a is the centripetal acceleration, v is the velocity of the seed, and r is the distance from the axis of rotation to the seed.
To use this formula, we need to first convert the rotational speed of the turntable from rev/min to radians per second. There are 2π radians in one revolution, so:
ω = (33 1/3 rev/min)(2π rad/rev)(1 min/60 s) = 3.49 rad/s
The velocity of the seed can be calculated from the tangential velocity formula:
v = rω
where v is the tangential velocity of the seed.
Substituting the given values, we get:
v = (0.073 m)(3.49 rad/s) = 0.255 m/s
Now we can use the formula for centripetal acceleration:
a = (v²) / r
Substituting the values we have calculated, we get:
a = (0.255 m/s)² / 0.073 m = 0.89 m/s²
Therefore, the acceleration of the seed is 0.89 m/s² assuming that it does not slip.
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discuss how errors due to earth curvature and refraction can be eliminated from the differential leveling process.
Errors due to earth curvature and refraction can be eliminated from the differential leveling process by using the trigonometric leveling method.
This method utilizes the principle of triangles to determine the height difference between two points on the Earth's surface.
The trigonometric method begins by measuring the horizontal angle between two points, then the vertical angle between the same two points, and finally the distance between the points.
The trigonometric method is not affected by the curvature of the Earth or refraction since the vertical angle is measured at a given distance instead of the line of sight.
Therefore, the measurements of the angles and distances remain unaffected.
The trigonometric leveling process is as follows: first, an instrument is set up at point A. A second instrument is then set up at point B, and both instruments are leveled.
The horizontal angle between the two points is then measured with a theodolite, followed by the vertical angle. Lastly, the distance between the two points is measured using a tape measure.
After all the measurements are taken, the results are then used in a trigonometric formula to calculate the difference in elevation between the two points.
This method eliminates errors due to refraction or the Earth's curvature, since the elevation difference is not determined by the line of sight, but rather by the measured angles and distance.
The trigonometric leveling method is the best method to eliminate errors due to the Earth's curvature and refraction from the differential leveling process.
This method uses trigonometric principles and measurements to accurately calculate the difference in elevation between two points.
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if two flutists play their instruments together at the same intensity, is the sound twice as loud as that of either flutist playing alone at that intensity? why or why not?
No, the sound wouldn't be twice as loud as that of either flutist playing alone at that intensity. The increase in sound intensity would be less than twice as loud.
This is because when two sound waves coincide, the amplitude of the resulting sound wave is the sum of the amplitudes of the individual sound waves. That is, when two identical sound waves come together, they create a new sound wave that is slightly louder than the original sound wave, but not twice as loud.
Furthermore, sound intensity is affected by the distance from the sound source, and when two flutists are playing together, the sound waves produced have to travel further before they reach the listener, thus reducing the intensity of the sound.
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how much water should be taken up by a plant when the air around it is completely saturated with water - 100 percent humidity.
The amount of water that a plant should take up when the air around it is completely saturated with water, i.e. 100 percent humidity, is the maximum amount of water the plant is capable of taking up from the environment. This is because there is no water left in the air for the plant to absorb.
What is humidity?Humidity refers to the amount of moisture present in the air. The humidity in the air is an important factor for the growth of plants. Humidity refers to the amount of moisture present in the air. The humidity in the air is an important factor for the growth of plants. In addition, the amount of water vapor present in the air determines how much water a plant can take up. As a result, humidity can play an important role in plant water uptake.
When the air around the plant is completely saturated with water, it means that the air has reached its maximum capacity for water vapor. The relative humidity, in this case, is 100%. When the air is completely saturated with water, it becomes difficult for the plant to take up any more water from the environment, as there is no water left in the air to absorb.
Therefore, the amount of water that a plant can take up is limited by the amount of water vapor present in the air.
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the words on the pages of a textbook and the wave of a hand your friend makes when she sees you on the street are both examples of .
The words on the pages of a textbook and the wave of a hand your friend makes when she sees you on the street are both examples of physical phenomena.
The words on the pages of a textbook and the wave of a hand your friend makes when she sees you on the street are both examples of physical phenomena. Physical phenomena are observable events or occurrences that can be described using the scientific method. These phenomena can be observed using our senses, such as sight, touch, sound, taste, and smell, or measured using instruments, such as thermometers, scales, or cameras. For example, the wave of a hand is a physical phenomenon because it is an observable event that can be seen and measured. Similarly, the words on the pages of a textbook are physical phenomena because they are observable and can be seen and read.
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Suppose you are standing on a skateboard or on in-line skates and you toss a backpack full of heavy books toward your friend. What do you think will happen to
you and why? Explain your answer in terms of Newton's third law of motion.
Answer: According to Newton's third law of motion, when you toss a backpack full of heavy books towards your friend while standing on a skateboard or in-line skates, there will be an equal and opposite reaction force acting on you, causing you to move in the opposite direction, which may be backward due to the conservation of momentum.
The formula for speed is Total Distance / Total Time. Based on the data table below, what is the
average speed after 2 minutes? Please show all calculations.
Time (min.) Distance (m)
0
1
2
3
0
50
75
90
Answer:
To find the average speed after 2 minutes, we need to calculate the total distance covered in 2 minutes and divide it by 2.
Total Distance after 2 minutes = 75m
Total Time after 2 minutes = 2 minutes
Average Speed after 2 minutes = Total Distance / Total Time
Average Speed after 2 minutes = 75m / 2 min = 37.5 m/min
Therefore, the average speed after 2 minutes is 37.5 m/min.
I Hope This Helps!
true or false: energy is the capacity to do work and work is anything that involves moving matter against an opposing force.
The given statement "Energy is the capacity to do work and work is anything that involves moving matter against an opposing force" is TRUE. Energy is the capacity to do work, which is defined as any action that requires the application of a force to move matter. This includes tasks such as lifting a book, pushing a door open, or running.
Energy refers to the capacity of a physical system to perform work. Energy is generally used to complete tasks, such as moving an object from one location to another, heating up or cooling down a material, or lighting up a room. Work is defined as the transfer of energy to an object via a force applied to the object over a given distance, as per the statement. Work is usually identified as the displacement of an object through a force applied to it in the direction of its displacement against an opposing force.Energy and work are two distinct but interrelated concepts in physics. Energy is the capacity to perform work, and work is the transfer of energy from one object to another through a force acting over a distance. Energy and work are both expressed in joules (J), the unit of energy in the International System of Units (SI).
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what is the equation to find the equivalent resistance, req, of two resistors in series, r1 and r2? group of answer choices
The equivalent resistance of resistors in series is always greater than the individual resistances. This is because the total resistance of the circuit is the sum of the resistances, and therefore the electric current has to overcome more resistance to flow through the circuit as compared to when a single resistor is used.
To find the equivalent resistance, req, of two resistors in series, r1 and r2, the following equation is used:
Req = R1 + R2
Where Req is the equivalent resistance of the series circuit,
R1 is the resistance of the first resistor,
R2 is the resistance of the second resistor.
Resistors in a circuit are the components that oppose the flow of electric current. When two resistors are connected in series, they are connected end to end so that the electric current flows through one resistor before flowing through the second one.In a series circuit, the equivalent resistance, req, is calculated as the sum of the individual resistances of the resistors connected in series.
Therefore, to find the equivalent resistance of two resistors in series, R1 and R2, we add the resistance values of the two resistors, as shown in the formula above.
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discuss the shape of the voltage and current waveforms. which appears more sinusoidal and why would you expect it to be that way?
The voltage waveform is more sinusoidal than the current waveform.
This is because the voltage source is assumed to be an ideal source, which means that the voltage is supplied without loss or fluctuation while the current waveform is distorted due to the loads present in the circuit. When a voltage waveform is applied to a circuit with inductance and capacitance, the resulting current waveform will be distorted and will not be sinusoidal. The current waveform is affected by the presence of capacitance and inductance in the circuit, which cause the current to lag behind the voltage. The current waveform becomes more distorted as the load resistance increases.
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g what is the relationship between the wavelength of light, its color, and the energy of its photons?
Shorter wavelengths of light correspond to higher frequencies, and higher frequencies of light correspond to more energy in the photons. This means that the color of light is related to the energy of its photons: the higher the frequency of light, the higher the energy of its photons and the closer the color is to the blue end of the visible light spectrum.
The relationship between the wavelength of light, its color, and the energy of its photons is as follows:
The energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength. In simpler terms, the shorter the wavelength of light, the greater the energy of its photons, while the longer the wavelength of light, the less energy its photons possess. The relationship between the wavelength of light and its color is also direct in that different colors are a result of light waves of different wavelengths.
The color spectrum ranges from red (longest wavelength) to violet (shortest wavelength), with colors in between, such as orange, yellow, green, blue, and indigo. This spectrum represents the visible part of the electromagnetic spectrum, with ultraviolet and infrared light having shorter and longer wavelengths, respectively. The energy of photons from these parts of the spectrum follows the same pattern as visible light, with ultraviolet photons possessing more energy than visible light photons and infrared photons possessing less energy than visible light photons.
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CQ6.07 Given: L = 26 mH (milli H) The inductor current i changes 9.1 A/ms (Amps per milli sec) for a short while. What is the voltage across the inductor during this period? VL = ?? V
The voltage across the inductor during the period when the current changes at 9.1 A/ms with an inductance of 26 mH is 236.6 V.
An inductor is an electrical component that stores energy in a magnetic field when a current passes through it. An inductor is a device that opposes any change in the current flowing through it. The inductor is represented by the symbol L and is measured in henries (H).
The difference in electrical potential between two points in a circuit is known as voltage. The unit of voltage is volts (V).
The voltage across an inductor can be calculated using the formula:
[tex]v = L(di/dt)[/tex]
where v is the voltage, L is the inductance, and [tex]di/dt[/tex] is the rate of change of current.
Substituting the given values, we get:
[tex]v = 26\ mH \times (9.1 \ A/ms)[/tex]
Note that the units for inductance and rate of change of current must be consistent, so we convert the inductance to henries (H) and the rate of change of current to amps per second (A/s):
[tex]v = 0.026\ H \times (9100 \ A/s)[/tex]
[tex]v = 236.6 \ V[/tex]
Therefore, the voltage across the inductor during this period is 236.6 V.
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What type of element gains electrons in ionic bonding, and what type of charge will it create?
Explanation:
Nonmetals tend to gain electrons and become anions. For example, in Fig. 2.22 A, a neutral oxygen atom (O), with eight protons and eight electrons, gains two electrons. This gives it two more negative charges than positive charges and an overall charge of 2–.
Jack and Jill are maneuvering a 3200 kg boat near a dock. Initially the boat's position is <2, 0, 3> m and its speed is 1.6 m/s. As the boat moves to position <6, 0, 1> m, Jack exerts a force of <-440, 0, 220> N, and Jill exerts a force of <150, 0, 300> N.
How much work does Jack do?
WJack = J
How much work does Jill do?
WJill = 0 J (correct)
What is the final speed of the boat?
vf = m/s
Jack does -1967.4 J of work on the boat.
There are four steps to get the final value:
First, we can use the work-energy principle
This states that the net work done on an object is equal to its change in kinetic energy.
We can also use Newton's second law, which relates the net force on an object to its acceleration:
F = ma
where F is the net force acting on the boat,
m is its mass, and
a is its acceleration.
To calculate the net force, we need to add up the individual forces exerted by Jack and Jill:
F= Fjack+ Fjill
where Fjack is the force exerted by Jack, and Fjill is the force exerted by Jill.
The net force can be calculated as:
F = <-440, 0, 220> + <150, 0, 300>
= <-290, 0, 520> N
Second, The boat's acceleration can be calculated using Newton's second law:
F= ma
a = F / m
a = <-290, 0, 520> / 3200
a = <-0.0906, 0, 0.1625> m/s^2
Third, The boat's final velocity can be calculated using its initial velocity, its acceleration, and the displacement:
vf^2 = vi^2 + 2ad
where vi is the initial velocity,
a is the acceleration,
d is the displacement, and
vf is the final velocity.
The displacement can be calculated as:
d = |<6, 0, 1> - <2, 0, 3>
= |<4, 0, -2>
= sqrt(4^2 + 0^2 + (-2)^2)
= 4.47 m
Plugging in the values, we get:
vf^2 = (1.6 )^2 + 2 * (-0.0906 ) * 4.47
= 1.89
= 1.37 m/s
Therefore, the final speed of the boat is 1.37 m/s.
Fourth, To calculate the work done by Jack, we can use the formula:
W = F * d
where F is the force exerted by Jack, and
d is the displacement of the boat.
Plugging in the values:
W = <-440, 0, 220> * 4.47
W = -1967.4 J
Therefore, Jack does -1967.4 J of work on the boat.
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a 60 kg dancer applies a horizontal force of -800 n on the dance floor. the dancer's acceleration will be
The acceleration of the dancer who applies a horizontal force of -800 N on the dance floor will be 13.33 m/s².
The formula used to calculate acceleration is as follows:F = m × a
where,F is the force,m is the mass, and,a is the acceleration
Substituting the given values in the above formula, we get:
-800 N = 60 kg × a
We can solve this equation for a, which will give us the acceleration of the dancer.
a = (-800 N) / (60 kg) = -13.33 m/s²
Therefore, the acceleration of the dancer will be 13.33 m/s².
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on a day when there is no wind, you are moving toward a stationary source of sound waves. compared to what you would hear if you were not moving, the sound that you hear has
The sound that you hear has a higher frequency and a shorter wavelength.
When you move towards a stationary source of sound waves, the wavelength is shortened and the frequency is increased. This is due to the Doppler Effect, which states that a wave's frequency increases as the source and observer come closer together.
The Doppler effect is a phenomenon when there is a change in the frequency of the wave due to a displacement of the source and detector/listener.
In summary, when you move towards a stationary source of sound waves, the sound you hear has a higher frequency and a shorter wavelength.
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calculate the time it takes for the voltage across the resistor to reach 10.0 v after the switch is closed.
The time it takes for the voltage across the resistor to reach 10.0 v after the switch is closed is 0.5 seconds.
The difference in electric potential between two places is known as voltage, often referred to as electric pressure, electric tension, or (electric) potential difference. It translates into the amount of work required to move a test charge between two points in a static electric field. Volt is the name of the voltage-derived unit in the International System of Units.
A capacitor, for example, or an electromotive force can build up electric charge and increase the voltage between two places (e.g., electromagnetic induction in generator, inductors, and transformers).
Electrochemical reactions (such as those in batteries and cells), the pressure-induced piezoelectric effect, and the thermoelectric effect can all produce potential differences on a macroscopic level.
To calculate the time it takes for the voltage across the resistor to reach 10.0V after the switch is closed, you can use the formula
t = RC,
where R is the resistance in Ohms and C is the capacitance in Farads.
Using the given values, the time it will take to reach 10.0V is
t = 10 Ω * 0.05F
= 0.5 seconds.
Therefore, the time it takes for the voltage across the resistor to reach 10.0 v after the switch is closed is 0.5 s.
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turns people upside down. people should not drop down. this is due to: gravity. inertia. seat belts. centrifugal force.
The given statement "turns people upside down" and "people should not drop down" are both due to the centrifugal force.
What is Centrifugal Force?Centrifugal force is defined as the apparent force that tends to move a rotating body away from the center of rotation. When an object moves in a circular path, a force must act towards the center of the circle to keep it moving in a circle. This force is known as the centripetal force.
The opposite force that acts to push the object away from the center of the circle is called centrifugal force. So, the given statement "turns people upside down" and "people should not drop down" are both due to the centrifugal force.
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a ball with a mass of 2.20 kg is moving with velocity (6.60i-2.40j) m/s. find the net work on the ball if its velocity changes to (8i 4.00j)m/s
The net work on the ball if its velocity changes to (8i 4.00j)m/s is 27.60 Joules.
Using the work-energy principle, we know that the net work done on the ball is equal to the change in its kinetic energy.
To find the change in kinetic energy, we need to calculate the ball's final velocity and its initial velocity, and then use the formula:
Change in Kinetic Energy = (1/2) x mass x (final velocity)² - (1/2) x mass x (initial velocity)²
The net work done on the ball is 27.60 Joules.
So, when the ball changes its velocity from (6.60i-2.40j) m/s to (8i+4.00j) m/s, the net work done on it is 27.60 Joules.
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how much thermal energy in calories is absorbed by 750.0g of water when its temperature increases from 15.4c t 86.3c
750.0 g of water at a temperature of 15.4°C will absorb 9,117.2 calories of thermal energy to increase its temperature to 86.3°C. This can be calculated by using the specific heat formula:
Q = m * c * ΔT
where:
Q = thermal energy (calories)
m = mass of water (g)
c = specific heat (calories/g°C)
ΔT = change in temperature (°C)
Therefore:
Q = 750.0 g * 4.184 calories/g°C * (86.3°C - 15.4°C)
Q = 9,117.2 calories
Thermal energy is the energy generated in the form of heat. It is a type of kinetic energy that is produced by moving particles that makeup matter. The movement of molecules generates heat energy in the form of kinetic energy. The faster the molecules move, the more thermal energy is generated.
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which has a greater (magnitude of) linear momentum: a 1000 kg truck moving at 30 mph, or a 500 kg car moving at 60 mph?
Answer : A 1000 kg truck moving at 30 mph has a greater magnitude of linear momentum than a 500 kg car moving at 60 mph, due to the larger mass of the truck and the lower velocity of the truck.
The magnitude of linear momentum for an object is equal to the product of its mass and velocity. Therefore, a 1000 kg truck moving at 30 mph has a linear momentum of 30,000 kg-m/s, while a 500 kg car moving at 60 mph has a linear momentum of 30,000 kg-m/s as well. As the magnitudes of linear momentum for both the truck and car are equal, the truck has a greater linear momentum than the car.
This is because the truck has a larger mass than the car and is moving at a lower velocity. In other words, the higher mass of the truck counteracts its lower velocity, resulting in an overall greater linear momentum. This can be illustrated with the equation p = mv, where p is linear momentum, m is mass, and v is velocity.
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a 4.0 kg body has two times the kinetic energy of an 8.5 kg body. calculate the ratio of the speeds of these bodies.
The ratio of the speeds of these bodies is 2.06
The kinetic energy of an object is equal to 1/2mv^2.
For the 4.0 kg body, the kinetic energy is 1/2 (4.0 kg)v^2
For the 8.5 kg body, the kinetic energy is 1/2 (8.5 kg)u^2
Given that the kinetic energy of the 4.0 kg body is twice the kinetic energy of the 8.5 kg body, we can set up the following equation:
1/2 (4.0 kg)v^2 = 2 * (1/2 (8.5 kg)u^2)
Simplifying the equation, we have:
2 (4.0 kg)v^2 = (8.5 kg)u^2
Solving for the ratio of the speeds, we get:
v^2/u^2 = (8.5 kg)/(2 (4.0 kg)) = 4.25
Therefore, the ratio of the speeds of the two bodies is equal to the square root of 4.25, which is approximately equal to 2.06.
So, the 4.0 kg body is moving at approximately 2.06 times the speed of the 8.5 kg body.
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a ball is thrown upward from the ground with an initial speed of 35 m/s; at the same instant, another ball is dropped from a building 5.0 m high. after how long will the balls be at the same height?
The time taken by both balls to be at the same height is 1.02 seconds.
The time taken by two balls to be at the same heightGiven,Initial speed of the ball that is thrown upward from the ground, u = 35 m/s,Initial height of the ball that is dropped from a building, h = 5.0 m,Finding out the time taken by both balls to be at the same height,Time taken by ball that is thrown upward from the ground, t = ?
For the first ball (that is thrown upward from the ground), the acceleration, a = -9.8 m/s² (negative because it's going against the gravity).Using the formula of motion,S = ut + 1/2 at²where,S = height of the ball above the ground, t = time taken by the ball to reach that height, and u = initial speed of the ball that is thrown upward from the ground.
Here, h = S and u = 35 m/s, and a = -9.8 m/s². Then putting the values we get,h = ut + 1/2 at²5 = (35)t + 1/2 (-9.8)t²5 = 35t - 4.9t²----------------(1)Also, for the second ball (that is dropped from a building), the time taken to reach the ground can be found using the formula, h = 1/2gt². Here, h = 5.0 m.
Therefore,5 = 1/2 × (-9.8) × t²5 = -4.9t²t² = -5/-4.9t² = 1.02t = √1.02
Therefore, the time taken by both balls to be at the same height is 1.02 seconds.
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6. object x of mass m travels toward object y of mass 2m in such a way that they collide. the table contains data about the velocities of object x and object y immediately before the collision and immediately after the collision. what are the change in momentum of the two-object system from immediately before the collision to immediately after the collision?
The change in momentum of the two-object system from immediately before the collision to immediately after the collision is m(v-V) + 2m(V-v).
The change in momentum of the two-object system from immediately before the collision to immediately after the collision can be determined using the following equation:
Change in Momentum = Final Momentum - Initial Momentum.
The initial momentum of object x is given by the formula: Mass x Velocity = mv, where m is the mass of object x and v is the velocity of object x immediately before the collision. The initial momentum of object y is given by 2mv, where 2m is the mass of object y and v is the velocity of object y immediately before the collision. The final momentum of object x is given by m(v-V) where m is the mass of object x, v is the velocity of object x immediately before the collision and V is the velocity of object x immediately after the collision. The final momentum of object y is given by 2m(V-v) where 2m is the mass of object y, V is the velocity of object y immediately after the collision and v is the velocity of object y immediately before the collision. The change in momentum = m(v-V) + 2m(V-v).Therefore, the change in momentum of the two-object system from immediately before the collision to immediately after the collision is given by m(v-V) + 2m(V-v).
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how long must a 0.70- mm -diameter aluminum wire be to have a 0.42 a current when connected to the terminals of a 1.5 v flashlight battery?
To determine the length of an aluminum wire required to carry a certain current, one must use the formula: r = (ρL) / (πr²), where r is the radius of the wire, ρ is the resistivity of the wire, and L is the length of the wire is 48.54 m.
What is the length of the wire?A 0.70 mm diameter aluminum wire has a radius of 0.35 mm or 0.00035 m. The resistivity of aluminum is 2.82 × 10⁻⁸Ωm. The formula for current is:
I = V / R
where, V is voltage, and R is resistance. We can rearrange this to:
R = V / I
Plugging in the given values of 0.42 A and 1.5 V gives R = 3.571 Ω. The resistance of a wire is given by:
R = ρL / A
where, A is the cross-sectional area of the wire, and ρ is its resistivity.
We know the resistivity of aluminum and the radius of the wire, so we can calculate the cross-sectional area of the wire:
A = πr² = 3.1416 × (0.00035 m)² = 3.848 x 10⁻⁷ m². Substituting all the values in the formula for the resistance of the wire and solving for L gives:
L = RA / ρ = (3.571 Ω) × (3.848 x 10⁻⁷ m²) / (2.82 × 10⁻⁸ Ωm) = 48.54 m.
Therefore, the aluminum wire must be 48.54 m long to have a current of 0.42 A when connected to the terminals of a 1.5 V flashlight battery.
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which is the correct unit to represent time?
d) 7m
b) 7m/h
c) 7 s
Two large parallel metal plates carry opposite charges. They are separated by 10 cm and p. D of 500 volts is applied on them. What is the magnitude of electric field strength between them? compute the work done by the field on a change of 2x10^-9 as it moves from higher to lower part?
(a) The magnitude of electric field in the region between the plates is [tex]\mathbf{9 , 2 5 0}$ $\mathrm{V} / \mathrm{m}$.[/tex]
(b) The magnitude of the force the field exerts on a particle with the given charge i[tex]s $2.22 \times 10^{-5} \mathrm{~N}$.[/tex]
(c) The work done by the field on the particle as it moves from the higher potential plate to the lower is[tex]$8.88 \times 10^{-7} \mathrm{~J}$.[/tex]
(d) the change of the potential energy is[tex]$8.88 \times 10^{-7} \mathrm{~J}$.[/tex]
(a) The magnitude of electric field in the region between the plates is calculated as;
[tex]$$\begin{aligned}& E=\frac{V}{d} \\& E=\frac{370}{40 \times 10^{-3}} \\& E=9,250 \mathrm{~V} / \mathrm{m}\end{aligned}$$[/tex]
(b) The magnitude of the force the field exerts on a particle with the given charge is calculated as follows;
[tex]$$\begin{aligned}& F=E q \\& F=9,250 \times 2.4 \times 10^{-9} \\& F=2.22 \times 10^{-5} \mathrm{~N}\end{aligned}$$[/tex]
(c) The work done by the field on the particle as it moves from the higher potential plate to the lower is calculated as follows;
[tex]$$\begin{aligned}& W=F d \\& W=2.22 \times 10^{-5} \times 40 \times 10^{-3} \\& W=8.88 \times 10^{-7} \mathrm{~J}\end{aligned}$$[/tex]
(d) the change of the potential energy is calculated as;
[tex]$$\begin{aligned}& \Delta U=q \Delta V \\& \Delta U=q\left(V_1-V_2\right)\end{aligned}$$$$\text { DeltaU }=2.4 \times 10^{-9}(370)$$$$\Delta U=8.88 \times 10^{-7} \mathrm{~J}$$[/tex]
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Full Question: Two large, parallel, metal plates carry opposite charges of equal magnitude. They are separated by a distance of 40.0 mm, and the potential difference between them is 370 V
A. What is the magnitude of the electric field (assumed to be uniform) in the region between the plates?
B. What is the magnitude of the force this field exerts on a particle with a charge of 2.40 nC ?
C. Use the results of part (b) to compute the work done by the field on the particle as it moves from the higher-potential plate to the lower.
D. Compare the result of part (c) to the change of potential energy of the same charge, computed from the electric potential.
Which traits are controlled by polygenic inheritance? Select four options.
red hair
hazel eyes
blood type
length of corn ears
birth weight
fur color of palomino horses
Answer:
All options except fur color of palomino horses and blood type
Answer:
A, B, D, and E
Explanation:
when a knowledgeable amateur astronomer tells you that she has a 14-inch telescope, what does the number 14 refer to?
When a knowledgeable amateur astronomer tells you that she has a 14-inch telescope, the number 14 refers to the diameter of the telescope’s objective lens.
A telescope is a device used to view distant objects by utilizing electromagnetic radiation to either magnify their apparent size or gather more light than the human eye can. Telescopes are used for scientific, commercial, and amateur purposes. The telescope comprises an objective lens or mirror and an eyepiece to magnify the images created by the objective. Most telescopes have a viewfinder to make it simpler to aim the telescope precisely at the object of interest. They may also have a motorized mount to track celestial objects as they move across the sky.
Telescopes come in a variety of sizes, designs, and shapes and they range from large observatory telescopes to handheld amateur models. They are often classified into two types, reflecting and refracting telescopes and the size of a telescope is determined by the diameter of its objective lens or mirror. The bigger the diameter, the more light the telescope can collect, and the clearer the image. The diameter of the objective is the most significant aspect of a telescope when it comes to observing the heavens. For instance, a 14-inch telescope has an objective lens with a diameter of 14 inches, this large lens is capable of collecting a lot of light and providing clear images, making it a perfect tool for viewing the night sky.
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