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nexus9112 [7]
3 years ago
10

What word describes the position in the moon's elliptical orbit when it is closest to Earth?

Physics
1 answer:
aivan3 [116]3 years ago
7 0
That's the moon's perigee.
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Two identical loudspeakers, speaker 1 and speaker 2, are 2.0 m apart and are emitting 1700-hz sound waves into a room where the
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Given the following in the problem:

Distances : 2.0 m and 4.0 m
Sound waves : 1700 hz
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Get the wavelength of the sound by using the formula: 
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Get the path length difference to the point from the two speakers 
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x = delta / lambda

If the outcome is nearly an integer, the waves strengthen at the point. If it is nearly an integer +0.5 the waves interfere destructively at the point. If it is neither the point is somewhat in in the middle.

Solving x = (4.47 – 4) / (0.2) = 2.35 an integer +0.5 so it’s a point of destructive interference. 
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