Answer:
<h2>507 J</h2>Explanation:
The kinetic energy of an object can be found by using the formula
m is the mass
v is the velocity
From the question we have
We have the final answer as
<h3>507 J</h3>Hope this helps you
An apple falls from a tree. Its position, at 0.3 second intervals, is shown below. At 0.0 seconds, the apple has not yet fallen,
and at 0.9 seconds, the apple is about to hit the ground.
At which time does the apple possess the least potential energy?
options:
0.0 seconds
0.3 seconds
0.6 seconds
0.9 seconds
At which time does the apple possess the least potential energy?
options:
0.0 seconds
0.3 seconds
0.6 seconds
0.9 seconds
2 answers:
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Answer:
Explanation:
The interaction of the piece of copper and water means that the first one need to transfer heat in order to reach a thermal equilibrium with water. Then:
After a quick substitution, the expanded expression is:
The final temperature of the system is:
Actually it's 
and it says that the energy of an object (E) is equal to the mass (m) of the object multiplied with the squared speed of light (
). This theory says that mass can be turned into energy and energy can be turned into mass. This is one of Einstein's theory of relativity.