Which of the following DOES NOT demonstrate potential energy?
a. A book on top of a book shelf
b. A roller coaster at the peak of a hill
c. A bowling ball rolling down the lane
d. A mountain climber at the top of a mountain

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

You can melt ice by applying pressure because the solid/liquid line has a slope.

Select the correct lewis structure for fluorine which is group 7a element?