The things that determine the amount of an object's gravitational potential energy are ...
-- mass of the object
-- gravitational acceleration in the place where the object is
-- height of the object above the ground or the floor
A). <em>a slice of bread; </em> No. It's still a slice of bread even if it's on the ground.
B. <em>A compressed spring; </em> No. It's still a compressed spring even if it's on the ground.
C. <em>An apple on a tree</em>; <em>Yes !</em> It can't be an apple on a tree if it's on the ground.
D. <em>A stretched bow string</em>; <em>No.</em> It's still a stretched bowstring even if it's on the ground.
The term you need to know is equilibrium. Technically it means that heat gained = heat lost. Normally in beginning chemistry classes the evidence for this condition is a stable temperature.
D. March because it is just below the 1 million marker on the graph and it is the only one that low.
Answer:
12m/s
Explanation:
Given parameters:
Power = 6.5 x 10⁴W
Force = 5.5 x 10³N
Unknown:
The resulting velocity = ?
Solution:
The velocity of a body is related to force and power using the expression below;
Power = Force x velocity
Insert the parameters and solve for velocity
6.5 x 10⁴ = 5.5 x 10³ x velocity
velocity = 
= 12m/s
