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alukav5142 [94]

3 years ago

7

Two sound sources send identical waves of 20 cm wavelength out along the +x axis. At what minimum (non-zero) separation of the s

ources will a listener on the axis beyond them hear: (a) the loudest sound (b) the weakest sound?

1 answer:

EastWind [94]3 years ago

5 0

10 because I did the quiz and got it right if you need help txt me

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A block rests on a frictionless horizontal surface and is attached to a spring. When set into simple harmonic motion, the block

MariettaO [177]

Answer:

v₀ = 0.5058 m/s

Explanation:

From the question, for the block to hit the bottle, the elastic potential energy of the spring at the bottle (x = 0.08 m) should be equal to the sum of the elastic potential energy of the spring at x = 0.05 m and the kinetic energy of block at x = 0.05 m

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m is the mass of the block.

Thus, potential energy of the spring at the bottle(x = 0.08 m) is;

U = ½ω²m(0.08m)²

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U = ½ω²m(0.05m)²

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K = ½mv₀²

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½ω²m(0.08)² = ½ω²m(0.05)² + ½mv₀²

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ω²(0.08)² = ω²(0.05)² + v₀²

Making v₀ the subject, we have;

v₀ = ω√((0.08)² - (0.05)²)

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As you move farther away from a source emitting a pure tone, the ___________ of the sound you hear decreases.

Colt1911 [192]

Answer:

frequency

Explanation:

The phenomenon of apparent change in frequency due to the relation motion between the source and the observer is called Doppler's effect.

So, when we move farther, the frequency of sound decreases. The formula of the Doppler's effect is

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