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2 years ago

15

An armadillo and Earth attract each other gravitationally. Which experiences the greater gravitational force, or do they experie

nce the same force magnitude?
a. Same force magnitude
b. Earth
c. Armadillo

1 answer:

Taya2010 [7]2 years ago

6 0

Answer:

a. Same force magnitude

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3 years ago

If the distance between two masses is tripled, the gravitational force between changes by a factor of:_______

adell [148]

Answer:

option A

Explanation:

given,

distance between two masses is doubled

new distance, r' = 3 r

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$F = \dfrac{GMm}{r^2}$ ............(1)

new gravitational force

$F' = \dfrac{GMm}{r'^2}$

now from the given condition

$F' = \dfrac{GMm}{(3r)^2}$

$F' = \dfrac{GMm}{9r^2}$

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now, from equation (1)

$F' = \dfrac{1}{9}F$

$\dfrac{F'}{F} = \dfrac{1}{9}$

now, the change in gravitational force factor is equal to $\dfrac{1}{9}$

Hence, the correct answer is option A

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3 years ago

A student pushes a 50-N box across the floor a distance of 15 m. How much work was done to move the box?

irinina [24]

Answer:750

Explanation:

50 times 15

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2 years ago

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A heated piece of metal cools according to the function c(x) = (.5)^(x _ 11), where x is measured in hours. A device is added th

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2 years ago

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The Hubble Space Telescope has a mass of 1.16*10^ 4 kg and orbits the Earth at an altitude of 5.68 * 10 ^ 5 above Earth's surfac

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Answer:

$E=8.13\times 10^{12}\ J$

Explanation:

Given that,

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We need to find the potential energy the telescope at this location. The formula for potential energy is given by :

$E=\dfrac{Gm_1m_e}{r}$

Where

$m_e$ is the mass of Earth

Put all the values,

$E=\dfrac{6.67\times 10^{-11}\times 1.16\times 10^4\times 5.97\times 10^{24}}{5.68\times 10^5}\\\\E=8.13\times 10^{12}\ J$

So, the potential energy of the telescope is $8.13\times 10^{12}\ J$ .

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2 years ago