Atransverse wave on a string has an amplitude a. a tiny spot on the string is colored red. as one cycle of the wave passes by, what is the total distance traveled by the red spot?

a.) 4a
b.) 1/2 a
c.) 1/4 a
d.) a
e.) 2a

E. 2A

Explanation:

Amplitude(A) of a wave is the displacement of a body from its position of rest. The maximum value of the amplitude is the crest and the minimum value is the trough.

For a wave to make a cycle, it has to move to and from from its point of displacement.

If the red spot on the string completes a cycle, this means it must have pass through the crest and the trough making it 2 amplitudes.

the correct choice is a .

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when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27