Ineed with science homework!
which of these is an example of work being done on an object?
select one:
a. holding a heavy piece of wood at a construction site
b. trying to push a car that doesn't move out of deep snow
c. holding a door shut on a windy day so it doesn't blow open
d. pushing a child on a swing

What is an aquifer for science class

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.

The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength