Acharge of −8.3 μc is traveling at a speed of 7.4 × 106 m/s in a region of space where there is a magnetic field. the angle between the velocity of the charge and the field is 52°. a force of magnitude 5.4 × 10−3 n acts on the charge. what is the magnitude of the magnetic field?

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Name two kinds of practical electric pumps.

Convection currents are caused by differences in what two things?