Author Question: If the z-component of the magnetic field of an electromagnetic wave traveling in the +x direction ... (Read 92 times)

ENagel · **on:** Jul 29, 2018

If the z-component of the magnetic field of an electromagnetic wave traveling in the +x direction through vacuum obeys the equation Bz(x, t) = (1.25 T) cos(3800 m-1)x - (1.14 10-12 rad/s)t,

what is the largest that the y component of the electric field can be? (c = 3.0 x 108 m/s)
A) 375 N/C
B) 4.17 10-15 N/C
C) 3.75 108 N/C
D) 4.17 10-9 N/C
E) 1.25 106 N/C

Question 2

A particle confined in a rigid one-dimensional box (an infinite well) of length 17.0 fm has an energy level En = 24.0 MeV and an adjacent energy level En+1 = 37.5 MeV.

What is the value of the ground state energy? (1 eV = 1.60 10-19 J)
A) 1.50 MeV
B) 13.5 MeV
C) 0.500 MeV
D) 4.50 MeV