A 12.2 kg ball moving to the right at 5.8 m/s collides elastically with a 9.0 kg block moving at 1.6 m/s . Find the final velocity of the 9.0 kg block.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.