Q1. A parallel-plate capacitor has a plate area of 1cm^1 and a plate separation of 2.5 mm. To obtain an electric field of 1.0*10^6N/m between the plates, the magnitude of the charge on each plate should be:
What is the charge (in) on positive electrode?
What is the charge (in) on negative electrode?
Q2. A .114 kg baseball is pitched horizontally at 38 m/s. After it is hit by a bat it moves horizontally at -37 m/s.
a) What impulse did the bat deliver to the ball?
b) If the bat and the ball were in contact for .70s, what was the average force the bat exerted on the ball?
c) What is the change in momentum for the ball?