Fill in the blanks pressure to a region of
7. Air moves from a region of
8. Wind is
air.
9. Air expands on
10. The warm air is
and contracts on
than the cold air.
Answer the following
11. Suggest two methods for finding the direction of the wind at a given pla
any instruments.
12. State two experiences that made you think that air exerts pressure.​

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)