Derive the version of maxwell's equations applicable to the electric and magnetic fields in an ohmic conductor ( = oe, p = 0). show that a solution of these equations consists of a travelling wave part, multiplied by an exponential attenuation with depth into the conductor. [25 marks] [5 marks] q 4(b) define the term skin depth

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".

Which of the following statement is false