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3 years ago

As a rock rolls down a hill, which types of energy are changing?

Physics

2 answers:

N76 [4]3 years ago

8 0

Answer:

The answer is: D. Gravitational potential energy and kinetic energy.

Explanation:

The value of the gravitational potential energy would then be given by: where m is the mass of the body and g is the acceleration of gravity.

If the body is dropped, it acquires speed and, with it, kinetic energy, while losing height and its gravitational potential energy decreases.

The answer is: D. Gravitational potential energy and kinetic energy.

Stells [14]3 years ago

4 0

D. Gravitational potential energy and kinetic energy

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An object of mass m is hung from a spring and set into oscillation. The period of the oscillation is measured and recorded as T.

sergejj [24]

Answer: $\sqrt{2}T$

Explanation:

Given

object of mass m is suspended from spring and set in oscillation with time Period T

We know Time period of a mass in oscillation is given by

$T=2\pi \sqrt{\frac{m}{k}}$

where k=spring constant

When mass m is replaced by a mass of 2 m time period is given by

$T'=2\pi \sqrt{\frac{2m}{k}}$

$T'=\sqrt{2}\times 2\pi \sqrt{\frac{m}{k}}$

$T'=\sqrt{2}T$

i.e. New time period becomes $\sqrt{2}$ times of previous one

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3 years ago

.In a bizarre but harmless accident, Superman fell from the top of the Eiffel Tower. How fast was Superman traveling when he hit

ELEN [110]

Answer:

(7.8) x (9.8 m/s) = 76.44 m/s

during the time he spent falling.

Since his falling speed was zero when he 'stepped' off of the top,

he hit the ground at 76.44 m/s.

That's about 170 miles per hour.

I'll bet he left one serious crater!

I hope this helps too! :D

Explanation:

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3 years ago

Magnet A and B are of equal magnetic strength and which position will magnets A&B have the greatest attraction for toward ea

77julia77 [94]

When they are facing each other, almost touching

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3 years ago

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How to find the total displacement of an object ?

OLga [1]

Answer:

it can be calculated by measuring the final distance away from a point, and then subtracting the initial distance

8 0

3 years ago

What characteristics of matter he was studying

Levart [38]

Answer:

The main physical characteristics of matter are mass, volume, weight, density, odor, and color. These are the characteristics that help us to see matter, feel matter, and taste matter.

Explanation:

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3 years ago