A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up-and-down motion.The displacement vector from the equilibrium position
a. is zero. b. has its largest magnitude.
c. points up. d. points down.
b, c
Physics & Space Science
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The current shown flowing through each coil must be 
A. increasing. B. decreasing. C. remaining constant. D. One needs more information to say how it is varying.
Physics & Space Science
If the sum of the external torques exerted on an object is zero, then the sum of the external forces exerted on it must also be zero
A) True B) False
Physics & Space Science
Two coherent waves, each with intensity I0, reach the same point in phase. The amplitude of the superposed wave is _________.
A. 0 B. I0 C. 2I0 D. 3I 0 E. 4I 0
Physics & Space Science
The frequency in an AC series circuit is halved. By what factor does this change the capacitive reactance?
a. 1/2 c. 1/4 b. 4 d. 2
Physics & Space Science