Author Question: A 15.0-kg crate, initially at rest, slides down a ramp 4.0 m long and inclined at an angle of 20 ... (Read 82 times)

maychende · **on:** Jul 28, 2018

A 15.0-kg crate, initially at rest, slides down a ramp 4.0 m long and inclined at an angle of 20 with the horizontal. If there is no friction between ramp surface and crate, what is the kinetic energy of the crate at the bottom of the ramp? (g = 9.8 m/s2)
a. 200 J
c. 10 J
b. 690 J
d. 100 J

Question 2

A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 28 J of work on its environment. How much heat is received by the system?
a. -20 J
c. +28 J
b. zero
d. +7 J