Which of the following statements is true? a)you are exposed to nuclear radiation every day. b)all natural radiation is at a level low enough to be safe. c)naturally occurring nuclear radiation is called background decay. d)most of the nuclear radiation you are exposed to in the environment is man-made.

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

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.

What quantity do units represent in value