The plates of an air-filled parallel-plate capacitor with a plate area of 14.5 cm² and a separation of 9.20 mm are charged to a 140-V potential difference. After the plates are disconnected from the source, a porcelain dielectric with k = 6.5 is inserted between the plates of the capacitor.
What is the charge on the capacitor before and after the dielectric is inserted?

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.