Describe how turning off the electric current in an industrial electromagnet affects its magnetic field.

True or false: the revolution of the earth creates day and night as it rotates around the sun

The energy equivalent of the rest mass of an electron is

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?