Physics Answers

Explain with proper figures (in detail): In the Faraday’s electromagnetic equation (also known as Maxwell’s 3rd equation), why the sign of the time derivative is negative but the curl part (of electric field) is positive.
Also explain in detail (with proper figures): if the sign ‘were’ positive, what would happen!

) Given, E ̅ = E ̅m sin(x) sin (t) a ̂y and H ̅ = E ̅m/µo cos(x) cos (t) a ̂z. Determine whether these fields satisfy Maxwell’s equations or not.

when two equal resistances are connected in series and parallel combination. find equivalent resistance in both cases.

explain molar specific heat.

how can we explain electric flux.

explain electric field lines.

write formula electric field due to point charge.

explain quantization of electric charge.

write gauss law for electrostatic.

A stone falls from a railroad overpass which is 36 feet high into the path of a train which is approaching the overpass with uniform speed. If the stone falls when the train is 30 feet away from the overpass and the stone hits the ground just as the train arrives at that spot. How fast is the train moving?