The secondary coil of an ideal neon sign transformer provides 7500 v at 10.0 ma. the primary coil operates on 120 v. what current does the primary draw?

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match

What ia the energy of an object because of its potential and kinetic energies