The force exerted by an electric charge at the origin on a charged particle at a point (x, y, z) with position vector r = x, y, z is f(r) = kr/|r|3 where k is a constant. find the work done as the particle moves along a straight line from (2, 0, 0) to (2, 4, 5).

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

Which component of the earth’s atmosphere is decreased due to photosynthesis?

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?