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USPshnik [31]
3 years ago
7

Two sound waves of equal amplitude interference so that compression of one wave falls on the rarefaction of the other. Which sta

tement is true?
A. No sound is heard

B. The loudness of the sound increase

C. There is no change in the sound

D. The pitch of the sound increases
Physics
1 answer:
iris [78.8K]3 years ago
3 0
<span>A. No sound is heard 
A*sin(wt)+(-A)*sin(wt)=0 - no sound

</span>
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An astronaut 100m from the spaceship observes a 200kg meteoroid that drifts toward the shop at 10m/sec. If the astronaut can gai
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No

Refer to the attachment for calculations

8 0
3 years ago
What is the average power output pf a weight lifter who can lift 250 kg 2.0 m in 2.0 s
liq [111]

Answer:

Power = 2.45Kw or 2450 Watts.

Explanation:

<u>Given the following data;</u>

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Time, t = 2secs

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Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

Power = \frac {Energy}{time}

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Substituting into the equation, we have

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To convert to kilowatt (Kw), we would divide by 1000

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8 0
3 years ago
The energy that generates wind comes from what source?
Rudiy27

Answer:

we can say that wind energy is due to

D) Severe thunderstorms

Explanation:

As we know that wind energy is converted into kinetic energy of wind mills

This kinetic energy of wind mill is then converted into electrical energy using turbine

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it neither be destroyed nor be created but it can transfer from one form to other form

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3 0
3 years ago
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Solid to liquid
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By adding or removing heat energy aka thermal energy 
7 0
3 years ago
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