3 years ago

I need the correct answer for this question please

Physics

1 answer:

kirill115 [55]3 years ago

7 0

Try C. a downward gravitational force exerted by Earth

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The US Environmental Protection Agency issues a daily report for pollution levels called the __________.

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3 years ago

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A train's mass is 500 kg and it's acceleration is 5 m/s. What is the net force on the train

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The answer is 2500 newtons. F = M * A, so 500 kg x 5 m/s = 2500 newtons.

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3 years ago

A bullet is fired through a wooden board with a thickness of 9.0 cm. The bullet hits the board perpendicular to it, and with a s

gtnhenbr [62]

Answer:

-387883.3 m/s²

0.000286168546055 seconds

Explanation:

t = Time taken

u = Initial velocity = 370 m/s

v = Final velocity = 259 m/s

s = Displacement = 9 cm

a = Acceleration

$v^2-u^2=2as\\\Rightarrow a=\dfrac{v^2-u^2}{2s}\\\Rightarrow a=\dfrac{259^2-370^2}{2\times 9\times 10^{-2}}\\\Rightarrow a=-387883.3\ m/s^2$

The acceleration of the bullet is -387883.3 m/s²

$v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{259-370}{-387883.3}\\\Rightarrow t=0.000286168546055\ s$

The time taken is 0.000286168546055 seconds

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3 years ago

If a proton is released at the equator and falls toward earth under the influence of gravity, the magnetic force on the proton w

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Positive positive side naturally because protons always move to positive side and electron always move to negative side

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A student was walking with a mass of 40 kilograms and an acceleration of 1 m/s/s. What is the force exerted on her?

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Answer:

Explanation:40x1=40 40=b

brainlyest plz

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I need the correct answer for this question please​

I need the correct answer for this question please