Aparallel-plate capacitor is constructed of two square plates, size l×l, separated by distance d. the plates are given charge ±q.
part a
what is the ratio ef/ei of the final electric field strength ef to the initial electric field strength ei if qis doubled?
part bwhat is the ratio ef/ei of the final electric field strength ef to the initial electric field strength ei if lis doubled? part cwhat is the ratio ef/ei of the final electric field strength ef to the initial electric field strength ei if d is doubled?

Frequency of electromagnetic waves that a radio station is assigned. what do you call this type of wave?

If we decrease the time it takes for a car to travel over the same distance this will

Abox that has self-contained cable clamps holds two light switches. a two-wire no. 12 cable with ground feeds the box, and a pair of two-wire no. 12 cables (four conductors) with ground wires leaves the box to feed the light fixtures. the second switch is fed by a no. 12 jumper wire from the first switch. which one of the following box combinations would furnish the minimum allowable volume? a. two 3-inch × 2-inch × 21⁄2-inch gangable device boxes b. two 3-inch × 2-inch × 11⁄2-inch gangable device boxes c. two 3-inch × 2-inch × 23⁄4-inch gangable device boxes d. two 3-inch × 2-inch × 21⁄4-inch gangable device boxes