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LiRa [457]
3 years ago
11

The frequency of sound will decrease when; A) The source approaches a stationary observer

Physics
1 answer:
soldi70 [24.7K]3 years ago
4 0

The Doppler effect says that if the source of a sound wave and the observer are moving further apart, the frequency of the sound as the observer hears it will decrease. This can be caused by the source moving away from the observer or the observer moving away from the source. Both C and D will cause the decrease in frequency.

Choice F

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Answer:

Yes. Inertia keeps the speed maintained though my feet leave the ground.

Explanation:

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3 years ago
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lbvjy [14]
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4 years ago
Dissolving common salt in water is physical or chemical change?
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With your hand parallel to the floor and your palm upright, you lower a 3-kg book downward. If the force exerted on the book by
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According to the net force, the acceleration of the book is 16.47 m/s².

We need to know about force to solve this problem. According to second Newton's Law, the force applied to an object will be proportional to mass and acceleration. Hence, it can be written as

∑F = m . a

where F is force, m is mass and a is acceleration

From the question above, we know that

m = 3 kg

g = 9.8 m/s²

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Find more on force at: brainly.com/question/25239010

#SPJ4

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