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3 years ago

8

When you jump, you exert a pushing force against the ground. Gravity pulls you back down. Why can a person jump higher on the mo

on than on Earth?

1 answer:

Dennis_Churaev [7]3 years ago

7 0

Answer:

This is because the force of gravity is much less on the moon than on the earth, therefore the person wont be pulled down much and will jump higher

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Which tools would sara us to find an irregularly shaped objects mass and volume A. a meter stick , a ruler , and water

tester [92]

I think it's D. Usually, to find the volume of an irregularly shaped object, you put it in water with a labeled beaker to measure how much the water rises. The balance would be used to measure the mass in grams.

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3 years ago

Given that average speed is distance traveled divided by time, determine the values of m and n when the time it takes a beam of

emmainna [20.7K]

Answer:

$5,2$

Explanation:

From the question we are told that:

Speed of light $C=3.0×10^8 m/s.$

Generally the equation for Average Speed is mathematically given by

$V_{avg}=\frac{d}{t}$

Where

d=Distance between the Earth and the sun

$d=1.5*10^11m$

Therefore

$t=\frac{d}{V_{avg}}$

$t=\frac{1.5*10^11m}{3.0×10^8 m/s.}$

$t=5*10^2s$

Since m and n is given in the form of

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Therefore

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3 years ago

A playground merry-go-round has radius 2.40 m and moment of inertia 2100 kg⋅m2 about a vertical axle through its center, and it

daser333 [38]

Answer:

a) 0.31 rad/s

b) 100 J

c) 6.67 W

Explanation:

(a) the force would generate a torque of:

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According to Newton 2nd law, the angular acceleration would be

$\alpha = \frac{T}{I} = \frac{43.2}{2100} = 0.021 rad/s^2$

It starts from rest, then after 15s it would achieve a speed of

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(b) The distance angle swept by it is:

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Hence the work by the child

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c) Average power to work per time unit

$P = \frac{W}{t} = \frac{100}{15} = 6.67 W$

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3 years ago

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andreyandreev [35.5K]

Explanation:

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The sum of the two vectors is

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The difference between the two vectors can be written as

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Answer: B

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3 years ago

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