A bungee cord has a spring constant of 82.5 N/m. After
jumping, a person oscillates
with a period of 7.50 s. What
is the mass of the person?
(Unit = kg)

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

How would a small bar magnet be oriented when placed at position x?

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.