Suppose you drive your car to the store and back. Your car started and finished in the same place (on your drive) so its potential energy hasn't changed but during the trip the car engine did a lot of work. This is an example where the work done is not equal to the change in potential energy.
Answer:
50 N ---->
Explanation:
Opposing sides get subtracted so~
25-25 cancels out to zero so there is 0N
100 -50 equals 50 N ->
The sun's light and heat that we depend on come about in the process of nuclear fusion deep in the sun's core. The same process takes place in the core of every living star, and in every 'hydrogen' bomb.
<u>Velocity here =displacement /time take</u>
<u>v=45-33/3</u>
<u>v=12/3</u>
<u>v=4 m/s</u>
Answer:
B. A dish of water is placed in the freezer and turns solid
Explanation:
it is a physical change because it can return to its original state by physical means. the other options are chemical changes because things like color change, bubbles or fizzing, and odor change all indicate a chemical change and cannot return to the original state it was in before.
