In a car lift used in a service station, compressed air exerts a force on a small piston of circular cross-section having a radius of 3.92 cm. this pressure is transmitted by a liquid to a second piston of radius 15.6 cm. what force must the compressed air exert in order to lift a car weighing 14600 n? answer in units of n.

In a system, when potential energy decreases, then entropy also decreases. true false

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?