Does anybody have an answer key to the nightmare land lab activity for earth systems?? I need help I dont get it:(

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?

An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)