Acube with sides of area 22 cm2 contains a 21.2 nanocoulomb charge. find the flux of the electric field through the surface of the cube in unis of nm2/c. enter a number with one digit behind the decimal point.

Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude f due to the other. with time, charge gradually leaks off of both spheres. when each of the spheres has lost half its initial charge, the magnitude of the electrostatic force will be

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects