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umka2103 [35]
3 years ago
10

A hammer falls off the top roof and strikes the ground with a certain kinetic energy. If it fell from a roof twice as tall how w

ould the kinetic energy compare?
Physics
2 answers:
Akimi4 [234]3 years ago
8 0

The kinetic energy with which the hammer strikes the ground
is exactly the potential energy it had at the height from which it fell. 

Potential energy is (mass) x (gravity) x (height) .... directly proportional
to height.

Starting from double the height, it starts with double the potential
energy, and it reaches the bottom with double the kinetic energy.

SOVA2 [1]3 years ago
3 0
No it would not compare because if you dropped off a higher building the kinetic energy would be higher than it was before.
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Answer:

Multiplexer

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) A coin is tossed 13 times. a) How many different outcomes are possible? 2^8 b) How many different outcomes have exactly 4 head
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Answer:

Explanation:

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outcome of two coins will be 4 i.e 2^2

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Using the general formula, the possible outcome when a coin is tossed 13 times will be "2^13"

b)

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2 years ago
A satellite circles the Earth in an orbit whose radius is twice the Earth’s radius. The Earth’s mass is 5.98 x 1024 kg, and its
gavmur [86]

Hello!

Recall the period of an orbit is how long it takes the satellite to make a complete orbit around the earth. Essentially, this is the same as 'time' in the distance = speed * time equation. For an orbit, we can define these quantities:

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T = \frac{2\pi (1.276*10^7)}{5590.983} =\boxed{ 14339.776 s}

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2 years ago
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