If the moving wire and the rails have a combined total resistance of 1.55 Ω 1.55 Ω , what applied force F F would be required to keep the wire moving at the given velocity? Assume that there is no friction between the moving wire and the rails.

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .