A neophyte magnet designer tells you that he can produce a magnetic field B in vacuum that points everywhere in the x-direction and that increases in magnitude with increasing x. That is, B = B0(x/a)i, where B 0 and a are constants with units of teslas and meters, respectively. Use Gauss’s law for magnetic fields to show that this claim is impossible. (Hint: Use a Gaussian surface in the shape of a rectangular box, with edges parallel to the x-, y-, and z-axes.)

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?