Suppose two equipotential surfaces are the planes x = 3 m and x = 5 m. If the potential at the x = 3 m surface is 10 V and the potential at the x = 5 m surface is 50 V, what is the magnitude of the electric field between the two surfaces?
a. 40 N/C
c. 15 N/C
b. 20 N/C
d. 10 N/C
Question 2
A bank vault is opened by applying a force of 300 N perpendicular to the plane of the door, 1.2 m from the hinges. Find the torque due to this force about an axis through the hinges.
a. 180 Nm
c. 300 Nm
b. 240 Nm
d. 360 Nm
planes of section
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