Author Question: A fully charged 37-F capacitor is discharged through a 1.0-k resistor. If the voltage across the ... (Read 29 times)

RYAN BANYAN · **on:** Jul 29, 2018

A fully charged 37-F capacitor is discharged through a 1.0-k resistor. If the voltage across the capacitor is reduced to 7.6 volts after just 20 ms, what was the original potential across the capacitor?

A) 11 V B) 8.0 V C) 9.0 V D) 16 V E) 13 V

Question 2

A ball rolls over the edge of a platform with only a horizontal velocity. The height of the platform is 1.6 m and the horizontal range of the ball from the base of the platform is 20 m.

What is the horizontal velocity of the ball just before it touches the ground? Neglect air resistance. A) 35 m/s
B) 9.8 m/s
C) 20 m/s
D) 4.9 m/s
E) 70 m/s