Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

The total amount of energy contained in an object

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked