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cupoosta [38]
3 years ago
5

Sound waves are mechanical waves. Which statement is true for this type of wave?

Physics
1 answer:
Bad White [126]3 years ago
6 0

Answer:

Electromagnetic waves do not require a medium in order to transport their energy. Mechanical waves are waves that require a medium in order to transport their energy from one location to another. ... Sound is a mechanical wave and cannot travel through a vacuum.

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The total number of protons and neutrons in an atom's nucleus is called 5
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Consider an ideal gas of 7 moles that is in contact with a thermal reservoir of temperature 475 K. The gas is enclosed in a cont
kozerog [31]

Answer:

(a). The initial pressure is 5.5\times10^{4}\ Pa

(b). The final pressure is 1.8\times10^{4}\ Pa

Explanation:

Given that,

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Initial volume = 0.50 m³

Expanded volume = 1.50 m³

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Using formula of pressure

P_{i}=\dfrac{nRT_{i}}{V_{i}}

Put the value into the formula

P_{i}=\dfrac{7\times8.31\times475}{0.50}

P_{i}=55261.5\ Pa

P_{i}=5.5\times10^{4}\ Pa

We need to calculate the final pressure

Using formula of pressure

P_{f}V_{f}=nRT_{f}

After expansion,

\dfrac{P_{f}V_{f}}{P_{i}V_{i}}=\dfrac{nRT_{f}}{nRT_{i}}

P_{f}=\dfrac{T_{f}}{T_{i}}\times\dfrac{P_{i}V_{i}}{V_{f}}

Put the value into the formula

For thermal process,

T_{i}=T_{f}

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P_{f}=18333.33\ Pa

P_{f}=1.8\times10^{4}\ Pa

Hence, (a). The initial pressure is 5.5\times10^{4}\ Pa

(b). The final pressure is 1.8\times10^{4}\ Pa

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4 years ago
Energy is measured in watts and work is measured in joules. true or false?
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= joule/s .
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What happens when a sound wave passes from water to air?
s344n2d4d5 [400]
It slows down. The molecules/particles aren't as close together, resulting in slower movement.
4 0
3 years ago
Read 2 more answers
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