The pulley has an efficiency of 78%. How much useful work does the pulley do if you perform 775 J of work on the pulley

The change of state from a gas to a liquid?

An air compressor takes normal air and pushes more and more of it in a rigid steel tank. The number of gas particles in the tank is increased. What happens to the temperature as more and more air is pushed into a tank which does not change size? A.

A bicycle and its rider have a combined mass of 80 kg and a speed of 6 m/s. What is the magnitude of the average force needed to bring the bicycle and its rider to a stop in 4 seconds?

A 10 kg ball has a momentum of 40 kg. m/s. what is the ball's speed?

Apply Which has more gravitational potential energy: a bird on the ground or the same bird in a tree? Why?

Which block has more thermal energy? if the blocks are placed in thermal contact, will the thermal engery of the blocks change?

What is long term potentiation

Which of the following describes a conductor? A. a rubber shoe sole with electrons stuck to the bottom. B. Electrons moving freely through a copper wire. C. a balloon with a small region of negatively charged electrons. D.

An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep crouch, pushed straight up for 0.21 s, and reached a height of 2.5 m above the ground.

The metric unit of force is the Newton (N), which is kg∙m/s^2. Convert 10 mg∙cm/s^2 to Newtons. Be careful when working with units. A. 1 x 10^-2 N B. 1 x 10^-5 N C. 1 x 10^-6 N D. 1 x 10^-7 N