Two disgruntled businesspeople are trying to use a revolving door. The woman on the left exerts a force of 500 N perpendicular to the door and 1.20 m from the hub’s center,
while the man on the right exerts a force of 300 N perpendicular to the door and 0.80 m
from the hub’s center. Find the net torque on the revolving door.

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

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

Positrons are spontaneously emitted from the nuclei of