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3 years ago

A 2-kg ball is held 4 m above the ground. Relative to the ground its potential energy is

Physics

1 answer:

oee [108]3 years ago

4 0

Answer:

78.4 J

Explanation:

The gravitational potential energy of the ball (relative to the ground) is given by

$U=mgh$

where

m = 2 kg is the mass of the ball

g = 9.8 m/s^2 is the acceleration due to gravity

h = 4 m is the height of the ball above the ground

Substituting numbers into the formula, we find

$U=(2 kg)(9.8 m/s^2)(4 m)=78.4 J$

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Equating the volume to the constant c, we will find the value of $r$ .

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Substituting the value of r in the ration between surface area and volume, we get:

$\frac{A}{V}=\frac{3}{ (\frac{3c}{4\pi} )^{\frac{1}{3} }}$

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$\frac{4.83598}{c^{\frac{1}{3} } }$

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10 months ago

In the diagram of the conical pendulum below, which number (1, 2, 3, or 4) represents the angle θ used in the conical pendulum e

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Step 1: Look in your book or online for the conical pendulum equation.

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Which of the following is NOT true about a pool of water and a piece of ice? A They have the same composition. B They are in dif

anastassius [24]

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3 years ago

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Beats are the difference in (a) Frequency (b) Amplitude (c) Intensity (d) None

sasho [114]

Answer:

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(a) is correct option.

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