20. Threshold braking in the vehicle's braking system occurs when

a. the brake pedal is pushed, heel on floorboard,

with full foot pressure.

b. the brakes are exerting full braking power,

without traction loss.

C. the driver begins pushing down the brake pedal,

with moderate slowdown.

d. the brakes just begin to take hold with a gradual

slowdown.

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.