A student lifts a 2 kg book at point X and transports the book to point Y along the
dotted-line path shown. On the path,
a = 2 meters, b = 10 meters, and c = 2
meters. (Hint: Remember the direction of
force and displacement.)
b
How much work is done by the student?
(b) How much work is done by gravity?

Why there is no inductive reactance in dc circuits

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

The energy equivalent of the rest mass of an electron is