MCAT Physics Question 100: Answer and Explanation
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Question: 100
10. If two waves are 180° out of phase, what is the amplitude of the resultant wave if the amplitudes of the original waves are 5 cm and 3 cm?
- A. 2 cm
- B. 3 cm
- C. 5 cm
- D. 8 cm
Correct Answer: A
Explanation:
When two waves are out of phase by 180°, the resultant amplitude is the difference between the two waves' amplitudes. In this case, the resulting wave will have an amplitude of 5 cm – 3 cm = 2 cm.