In the radiation field from an antenna, the electric and magnetic fields are
A)
perpendicular to one another.
B)
anti-parallel to one another.
C)
anti-perpendicular to one another.
D)
parallel to one another.
E)
never in any geometric arrangement with respect to one another.
Question 2
What is the mean free path of a gas of hard spheres of radius 2.00 10-9 m when the number of spheres per volume is 3.00 1019 m-3?
A)
1.17 10-4 m
B)
4.00 10-9 m
C)
9.76 10-5 m
D)
1.88 10-3 m
E)
4.69 10-4 m