Two parallel-plate capacitors have the same plate area, and the gap between the plates is filled with a dielectric with a dielectric constant equal to 6 . The gap in capacitor A is three times that in capacitor B. What is the ratio of the capacitance of A to B?
a. 1/3
c. 3
b. The ratio is not given.
d. 18
Question 2
Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At which of the following times does the average angular acceleration equal the instantaneous angular acceleration?
a. 0.50 T
c. 0.71 T
b. 0.67 T
d. all of the above
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