Estimate how many pennies would you have to stack to reach from the floor to an average 8-ft ceiling.
A) 2 103
B) 2 102
C) 2 104
D) 2 105
E) 2 x 106
Question 2
At a distance of 4.3 cm from the center of a very long uniformly charged wire, the electric field has magnitude 2000 N/C and is directed toward the wire.
What is the charge on a 1.0 cm length of wire near the center? (0 = 8.85 10-12 C2/N m2)
A) -0.056 nC B) -0.044 nC C) -0.048 nC D) -0.052 nC