Time for 15 oscillation of a simple pendulum is equal 70.0 seconds, what is the length of the pendulum? Take g = 10.0 m/s2

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.