PLEASE HELP Which of the following statements is false?

An observer is immersed in a magnetic field that points toward her. An electron fired from her right to her left would be deflected downward.

An electron fired eastward at the equator would be deflected downward.

A proton fired upward at the equator is deflected westward.

An observer is immersed in a magnetic field that points from her right to her left. A proton fired upward in front of her would be deflected toward her.

None of these

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.