Amachine in an ice factory is capable of exerting 2.70 × 102 n of force to pull large blocks of ice up a slope. the blocks each weigh 1.43 × 104 n. assuming there is no friction, what is the maximum angle that the slope can make with the horizontal if the machine is to be able to complete the task? answer in units of ◦ .

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

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.