At which is the potential zero?
A. A
B. B
C. C
D. D
E. E
F. None of the labeled points
C. C
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Lens-Maker Formula: A double-convex lens is formed from a piece of plastic with an index of refraction of 1.70. The radius of the front surface has magnitude 20 cm, and the radius of the back surface has magnitude 30 cm. What is the focal length of this lens?
A. 17 cm B. 86 cm C. -86 cm D. -17 cm E. 43 cm
For an object in static equilibrium
A. The net torque about any point is zero B. None of these are true. C. The net torque about every point is different D. The net torque about every point is a nonzero constant
A mass is oscillating on a spring with an amplitude of 8.3 cm and a period of 4.6 s. Write an expression for its position, x, as a function of time, if x is equal to 8.3 cm at t = 0 s
What will be an ideal response?
Pumped storage generally will enable a utility to _______
a. increase the efficiency of their electrical generating system b. store energy until the demand is high enough c. raise electrons to higher energy states d. increase their electrical potential energy