C) because a new substance is formed
B) not sure but might be because the chemical properties of the substance has changed
The second one if it’s on edge
Potential energy can be found using this formula:
PE= m * g * h
where:
PE= potential energy
m=mass
g=gravitational acceleration constant (9.8 m/s^2)
h= height
So your answer is height because you also use the gravitational constant.
75 percent (calculated percentage %) of what number equals 27? Answer: 36.
