Achild on a playground swing makes a complete to-and-fro swing each two seconds. the frequency of the swing is

What does the term discrediting mean?

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?

The energy of a photon is equal to (what) times (what) of the photon.