From the voltage difference between the accelerating plates, calculate the electron’s velocity entering the gap between the deflection plates. Write down any assumptions you needed to make.

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.