How much heat will be necessary to supply 0.25 kg of a substance with specific heat 0.2 cal / g · ºC, so that its temperature goes from 5ºC to 59ºc? Q = Q = Q = Q =

Which would not reduce the amount of green house gasses in the air

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

Acar jack with a mechanical advantage of 6 needs to produce an output force of 600 n to raise a car. what input force is required? 6 n 100 n 600 n 3,600 n