Which statement is false? A) Doubling the mass halves the acceleration

B) Doubling the force doubles to acceleration

C) Doubling the mass doubles the acceleration

Which subatomic particle has a negative charge

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?