Electricity and Magnetism Answers

A cannon and a target are 5.10 km apart and located at the same level. How soon will the shell launched with the initial velocity 240 m/s reach the target in the absence of air drag?

If two charges q and a are placed d distance what is force between them.

Comparing different external fields: Now place a bar magnet near your compass and observe what happens to the oscillation frequency

Two charged particles are a distance of 1.82 m from each other. One of the particles has a charge of 6.89 nC, and the other has a charge of 4.18 nC.
(a)
What is the magnitude (in N) of the electric force that one particle exerts on the other?

Write down potential due to point charge.

"A fixed voltage is connected across parallel plate capacitor. Does the electric field intensity in the space between the plates depends on permittivity of the medium? Does the electric flux density depends upon the permittivity of the medium?

An audio amplifier drives a series RLC circuit consisting of an 8ohm loudspeaker, a 160µF capacitor and a 1,5mH inductor. The amplifier output is 15V rms at 500 Hz.

a) calculate power delivered to loudspeaker
b) calculate maximum power that amplifier could deliver
c) how capacitor would change for resonance to happen?

Please assist.

Write elecric field due to point charge.

What is internal resistance of cell or bettry