A block is sitting on a ramp that is inclined 37 degrees. If the coefficient of static friction between the block and the ramp is 0.75, find the mass of the block.

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?

Which of the following is an example of motion in two dimensions?

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%