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

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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

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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

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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