If the length of a ramp (an inclined plane) is 20ft, and it rises 5ft, what is its ma? (apex) a.0.25 b.5 c.4 d.100

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.