Answer:
384,000
Explanation:
Time taken by light to travel from earth to moon t=1.28s
Let us assume that the speed of light = c
So, the distance traveled by light in this time = c x t
this will be the distance which light traveled to reach moon, so this will be the distance between earth and moon.
The speed of light is 300000 km/s
By putting the values
we get
Distance = c x t
= 300000 x 1.28 km
=384000 km
We know the moon circulates the Earth. Suppose the mass of the Earth and moon are 5.9742 x1024 kg and 7.36 x 1022 kg, whereas the radius of the orbit is 382171 km. What will the gravitational force between the Earth and the moon?
Answer:
The gravitational force between two objects, one of mass M1 and the other of mass M2, is:
F = G*M1*M2/R^2
Where G is a constant:
G = 6.6x10^11 m^3*/(kg*s^2)
And R is the distance between the two objects.
M1 = 5.9742x10^24 kg
M2 = 7.36x10^22 kg
R = 382171 km = 382171000 m
Then the gravitational force is:
F = 6.6x10^-11 m^3*/(kg*s^2)*(5.9742x10^24 kg)*(7.36x10^22 kg)/(382171000 m)^2
F = 1.987x10^20 N
Which of the following is a benefit of physical activity?
Answer:
B
Explanation:
better concentration
When the light turns green, Mark accelerates straight down the road at 1.8 m/s2 for 8 seconds. What is his final velocity at the end of those 8 seconds?
Answer:
14.4m/s
Explanation:
To calculate the final velocity (V), we use the formula:
v = u + at
Where; v = final velocity (m/s)
u = initial velocity (m/s)
a = acceleration (m/s²)
t = time (s)
According to the provided information in this question, v = ?, u = 0m/s, a = 1.8m/s², t = 8s
Hence, v = u + at
v = 0 + (1.8 × 8)
v = 0 + 14.4
v = 14.4m/s
Therefore, his final velocity at the end of those 8 seconds is 14.4m/s.
Out of these people who r ur favs?
WilburSoot
TommyInnit
Tubbo
Fundy
Sapnap
Dream
GeorgeNotFound
Quackity
Jschalt
Nikki
Ponk
Skeppy
BBH
Punz
aweSAMedude
HiBomb
TechnoBlade
Answer:
Is it a sin to like them all...? haha
Answer:
Schlatt, Nikki, Tubbo, and Wilbur :O
Explanation:
how is this a question lol-
Which of the following is TRUE about velocity?
a if velocity changes the object could be speeding up
b if velocity changes the object could be slowing down
c an object with constant velocity is at rest
d Constant velocity is velocity that doesn’t change
e if velocity changes it is accelerating
Answer:
A
Explanation:
Velocity is when something fast moves
I hope i helped
what is the definition of physics?
A.the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution
B.the branch of science that deals with the identification of the substance of which matter is composed
C.the branch of science concerned with the nature and properties of matter and energy
D.the branch that deals with the relations of organisms to one another and to their physical surroundings
Answer:
your answer should be c
Answer:
D.the branch that deals with the relations of organisms to one another and to their physical surroundings
How long would it take to swim across a lake that is 350 meters, if you swam at 9 m/sec
Answer:
[tex]\boxed {\tt t\approx 38.89 \ s}[/tex]
Explanation:
Time can be found by dividing the distance by the speed.
[tex]t=\frac{d}{s}[/tex]
The distance is 350 meters.
The speed is 9 meters per second.
[tex]d= 350 \ m \\s= 9 \ m/s[/tex]
Substitute the values into the formula.
[tex]t=\frac{350 \ m}{9 \ m/s}[/tex]
Divide. Note that the meters or "m" will cancel each other out and the seconds or "s" will move to the numerator.
[tex]t=\frac{350 }{9 \ s}[/tex]
[tex]t=\frac{350 \ s}{9}[/tex]
[tex]t=38.8888889 \ s[/tex]
Round to the nearest hundredth. The 8 in the thousandth place tells us to round the 8 to a 9.
[tex]t \approx38.89 \ s[/tex]
It will take about 38.89 seconds to swim 350 meters at 9 meters per second.
From Earth stars appear very dim, but in space they are quite bright. From Earth we are seeing the stars
A) absolute magnitude
B) apparent magnitude
C) available magnitude
D) absent magnitude
Answer:
B
Explanation:
A 0.660 kg ball is dropped from rest from the top of a building and falls for 5.65 seconds. How tall was the building ?
Answer:
The height of the building is approximately 156.58 m
Explanation:
The mass of the ball dropped from rest from the building top = 0.660 kg
The time in which the ball falls, t = 5.65 seconds
The height, h, of the building is given from the following equation of motion;
h = u·t + ¹/₂·g·t²
Where;
u = The initial velocity of the ball = 0 m/s
g = The acceleration due to gravity = 9.81 m/s²
Plugging in the values, we have;
h = 0 × 5.65 + ¹/₂ × 9.81 × 5.65² ≈ 156.58 m
The height of the building, h ≈ 156.58 m.
A train accelerates at -1.5m/s for 10 seconds if the train had an initial speed of 32 m/s what is it's new speed
a soccer ball is kicked horizontally off a cliff with an initial speed of 8 m/s and lands 16 m from the base of the cliff What is the time of flight of the soccer ball?
The time of flight of the soccer ball is 2 seconds.
Given the following data:
Initial speed = 8 m/sDisplacement = 16 meters.To find the time of flight of the soccer ball;
Mathematically, the time of flight for a horizontal displacement is given by the formula;
[tex]Time \;of \;flight = \frac{Displacement}{Initial \; velocity}[/tex]
Substituting the values into the formula, we have;
[tex]Time \;of \;flight = \frac{16}{8}[/tex]
Time of flight = 2 seconds.
Therefore, the time of flight of the soccer ball is 2 seconds.
Read more: https://brainly.com/question/15653932
A student connects four AA batteries (1.5 V each) in series to light up a light bulb. The circuit has a resistance of 50 Ω. How much current flows through the circuit?
Answer:
0.3
Explanation:
V = I R
1.5= I (50)
I = 1.5/50
I = 0.3 J
If a student connects four AA batteries (1.5 V each) in series to light up a light bulb. The circuit has a resistance of 50 Ω, then the current flows through the circuit would be 0.12 Amperes.
What is resistance?Resistance is the obstruction of electrons in an electrically conducting material.
The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law.
V = IR
As given in the problem If a student connects four AA batteries (1.5 V each) in series to light up a light bulb. The circuit has a resistance of 50 Ω.
V = IR
6 = 50 × I
I = 0.12 ampere
Thus, the current flowing through the circuit would be 0.12 ampere.
link given below ;
Learn more about resistance here, refer to the
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Does horizontal motion have any formula?
According to Darwin's theory of evolution, in which order do the steps of natural selection happen?
Some members of a population survive and reproduce their environment or location changes, and favorable traits
are passed on to offspring.
O A population's environment or location changes, some members survive and reproduce, and favorable traits are
passed on to offspring.
Favorable traits are passed on to offspring in a population, some members survive and reproduce, and the
environment or location changes.
Some members of a population survive and reproduce, favorable traits are passed on to offspring, and their
environment or location changes.
PLEASE HELP FAST!!
Answer:
The correct answer is B.
Explanation:
Darwin's theory of evolution is "A population’s environment or location changes, some members survive and reproduce, and favorable traits are passed on to offspring." So it's Option B.
Hopefully, this helps! :D
Ask your question below!
Answer:
B.
Explanation:
It's right in edge
(ii)
Calculate the amount of energy required to melt 15 kg of ice at 0 °C.
Specific latent heat of fusion of ice = 3.4 x 10J/kg.
WILL MARK BRANLIEST PLZ HELP FAST
Answer The Questions Based on The Graph
1. Which limiting factor(s) in this lab simulation are biotic?
2. Which limiting factor(s) in this lab simulation are abiotic?
3. Which limiting factor impacted the cricket frog population the most? Use evidence to support your answer.
4. Which limiting factor impacted the cricket frog population the least? Use evidence to support your answer.
5. Mosquitoes can carry and transmit disease to animals and humans. Explain how the cricket frog plays an important role in limiting the spread of mosquito-borne illnesses like West Nile virus and malaria.
6. Predict the long-term effects of these limiting factors on the cricket frog population in the pond ecosystem.
Answer:
1. Which limiting factor(s) in this lab simulation are biotic?
The limiting factors in this lab that are biotic are predators and food.
2. Which limiting factor(s) in this lab simulation are abiotic?
The limiting factor in this lab that is abiotic is pollution.
3. Which limiting factor impacted the cricket frog population the most? Use evidence to support your answer.
The limiting factor that impacted the cricket frog population the most is the predators because the population went to 90K and then all the way down to 15K.
4. Which limiting factor impacted the cricket frog population the least? Use evidence to support your answer.
The limiting factor that impacted the cricket frog population the least is pollution because it stayed the same then went down to 35K.
5. Mosquitoes can carry and transmit disease to animals and humans. Explain how the cricket frog plays an important role in limiting the spread of mosquito-borne illnesses like West Nile virus and malaria.
The cricket frogs play an important role in limiting the spread of mosquito borne illnesses because they consume the mosquitos and decrease the population of contaminated mosquitos.
6. Predict the long-term effects of these limiting factors on the cricket frog population in the pond ecosystem.
Eventually the cricket frog population may die out because of all the negative factors. If there are too many mosquitoes, then the frog population can begin to die out. With pollution, the frogs do not have a safe and clean environment to leave in and can get infected, sick, and can die after a while. Crocodiles need to eat, so they are also bringing down the population.
how is the atmospheric pressure detected
Answer:
The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.
Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. Meteorologists describe the atmospheric pressure by how high the mercury rises.
An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury.
Atmospheric pressure drops as altitude increases. The atmospheric pressure on Denali, Alaska, is about half that of Honolulu, Hawai'i. Honolulu is a city at sea level. Denali, also known as Mount McKinley, is the highest peak in North America.
Explanation:
What is the relative humidity if the dry-bulb temperature is 18°C and the wet-bulb temperature is 11°C?
Answer:
The amount of moisture air can hold is dependent on its temperature and pressure. The warmer the air the greater the quantity of water vapour it can contain. The air temperature is measured with a normal thermometer this is the Dry-Bulb reading. The actual amount of moisture known as the mixing ratio is measured in grams of water per kilogram of dry air. When air at a certain temperature is saturated it cannot hold any more moisture. The relative humidity of the air is the ratio of the actual amount of moisture in the air to the fully saturated amount.
We can use evaporation to measure the amount of moisture in the air. A wet cloth is placed over the bulb of a thermometer and then air is blown over the cloth causing the water to evaporate. Since evaporation takes up heat, the thermometer will cool to a lower temperature than a thermometer with a dry bulb at the same time and place. The depression in Wet-Bulb temperature allows the humidity to be calculated. If the air is fully saturated (100% relative humidity) the water cannot evaporate, so both the wet and dry bulb temperatures are the same. If the dry and wet bulb temperatures are set to the same value the calculator will show the saturation mixing ratio the amount of water in saturated air at that temperature.
If partly saturated air is cooled without changing its pressure or amount of water vapour, a point is reached when it becomes saturated. The moisture will be given up as dew or ice crystals. This temperature is the Dew Point. This is why condensation will form on a bottle of cold beer, as the air in the vicinity of the bottle is cooled below its dew point. Meteorological reports usually quote the temperature and dew point as well as the station pressure. Moisture content and relative humidity can be calculated from these figures.
The Psychrometer is the name of a device containing both a wet and dry bulb thermometer. This can be a fixed device for meteorology or a handheld sling psychrometer that is often used in air conditioning applications.
Explanation:
What is special about decomposers? *
a. they are autotrophs that absorb nutrients that have been digested outside their bodies.
b. they are heterotrophs that absorb nutrients that have been digested outside their bodies.
c. they are autotrophs that digest food internally (inside their bodies)
d. they are heterotrophs that digest food internally (inside their bodies)
2.
The inertia of an object depends on its
Answer:
Inertia of an object depends on the mass of the object.
Explanation:
Inertia is the property that is possessed by a matter( anything that has weight and occupies space) that enables it to be at rest or in a state of continuous uniform motion.
The inertial of a body is the resistance that is present in the body, that forces acting on the body have to overcome for the body to move or continue moving.
The inertia of a body depends on the mass of such a body, which is directly proportional. The mass of an object is the measure of inertia, the bigger the mass of an object the bigger the inertia.
Therefore the Inertia of an object is largely dependent on the mass of such an object.
PLEASE HELP 2 or 3 SENTENCES PLSLSLSLSL
How have scientists, inventors and / or engineers used the properties of States of Matter to benefit our society?
Answer:
threy need to do it. becuse they do
Explanation:
In space, rockets move by shooting air backwards. What moves faster the air or the ship?
Answer:
Its being pushed.
Explanation:
There is no air but its being pushed by the flames coming from the rocket.
The equation Upper E equals StartFraction 1 Over 2 pi epsilon Subscript 0 EndFraction StartFraction q d Over z Superscript 3 EndFraction is approximation of the magnitude of the electric field of an electric dipole, at points along the dipole axis. Consider a point P on that axis at distance z = 23.00d from the dipole center (d is the separation distance between the particles of the dipole). Let Eappr be the magnitude of the field at point P as approximated by the equations below. Let Eact be the actual magnitude. What is the ratio Eappr /Eact?
Answer:
E_aprox = 1.003 E_real
Explanation:
In this exercise we are given the expression for the electric field of a dipole in the axis direction of the dipole
E_real = k 2q d / √(z² + d²)³
I think your equation has some errors.
In this case they indicate that d is the separation of the charges of the dipole
in the case of z »d this equations approximates
E_aprox = k 2q d/ z³
calculate the value for the two cases
E_real = k2q d / √[ ((23d)² + d²)³]
E_real = k2q d / d³ 12201
E_real = k2q 1/12201 d²
E_aprox = k2q d / (23.00d)³
E_aprox = k2q 1/12167 d²
the error between these quantities is
E_aprox / E_real = 12201 d² / 12167 d²
E_aprox / E_real = 1.003
E_aprox = 1.003 E_real
A hiker walks 11 km due north from camp and then turns and walks 11 km due east. What is the total distance walked by the hiker?
Answer:
22 km
Explanation:
11km + 11km= 22km
how many tennis balls are in 8 bags if each bag holds 25 tennis balls.
The answer is 200, 200 tennis balls would be in 8 bags if they each held 25.
Answer:
200 balls
Explanation:
You push a desk with 245 N, but the desk doesn't move due to its friction with the ground. What is the magnitude of the friction force felt by the desk?
If the desk doesn't move, then it's not accelerating.
If it's not accelerating, then the net force on it is zero.
If the net force on it is zero, then any forces on it are balanced.
If there are only two forces on it and they're balanced, then they have equal strengths, and they point in opposite directions.
So the friction on the desk must be equal to your 245N .
Which two options would increase the electric force between two charged
particles?
O A. Increase the distance between the particles.
B. Increase the charge of one of the particles.
C. Decrease the charge of both particles.
O
D. Decrease the charge of one of the particles,
O E. Decrease the distance between the particles,
The two options would increase the electric force between two charged
particles is
E. decrease the distance between particles.
B. Increase the charge of one of the particles.
What is Electric force?The attractive or repulsive interaction that lies between any two charged objects should be called as the electric force.
When the distance between the particles is decreased and the charge of one particles should be increased so it increased the electric force.
hence, option b and option e are correct.
Learn more about electric force here: https://brainly.com/question/17562167
According to Rahul any two bricks tied together would fall faster than a single
one under the action of gravity by neglecting air resistance. Do you agree with
Rahul? Give a reason to support your answer.
Answer:
Rahul is wrong.
Explanation:
From Newton's universal law of gravitation, we know that the force of attraction between two falling body masses is directly proportional to product of masses of two bodies and has an inverse proportional relation with the square of the distance between the masses.
If the 2 masses are M1 & M2, while distance between them is d, this can be written as;
F ∝ M1•M2
And F ∝ 1/d²
We also know that the acceleration due to gravity is given as;
g = GM/r²
Where;
M is the mass of earth
r is the radius of earth
From the above 3 formulas, we can deduce that the value of the acceleration due to gravity(g) is independent of the 2 masses of the falling body as it depends on only the mass of the earth and radius of the earth.
This means that the acceleration due to gravity will be the same whether the bricks are doubled or whether it remains single.
Thus, they will fall with same velocity in each case. So Rahul is wrong.
Distance Versus Displacement: Which one will always be the shortest out of the 2?
Answer:
The "distance" is the answer to the question,
Explanation:
An inclined plane of length 12m is used to pull a load of 3000N to height of 3m by applying an effort of 1000N. Calculate its MA, VR and efficiency. Also, find the work done in the machine
Answer:
MA = 4
VR = 3
e = 0.75 or 75%
work = 12000 [J]
Explanation:
The mechanical advantage in an inclined plane is defined as the relationship between the length of the inclined plane and the height of the plane with respect to the ground.
MA = L/h
MA = 12/3 = 4
Now the real advantage can be calculated as the relationship between the weight of the body and the force being applied.
VR = W/F
VR = 3000/1000
VR = 3
Efficiency can be calculated as the relationship between the real mechanical advantage over the ideal mechanical advantage.
e = VR/MA
e = 3/4
e = 0.75 or 75%
The work is defined as the product of the force by the distance, therefore we have:
work = F*d
work = 1000*12
work = 12000 [J]