If we're interested in knowing the rate at which light energy is received by a unit of area on a particular surface, we're really trying to figure out the a. luminous flux. b. illuminance of a surface. c. luminous intensity. d. incandescence.

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?