Afuture space station in orbit about the earth is being powered by an electromagnetic beam from the earth. the beam has a cross-sectional area of 183 m2 and transmits an average power of 2.06 × 104 w. what are the rms values of the (a) electric and (b) magnetic fields?

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

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc