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3 years ago

What’s the velocity of a sound wave traveling through air at a temperature of 18°C (64.4°F)?

Physics

2 answers:

GREYUIT [131]3 years ago

7 0

The velocity of a sound wave traveling through air at a temperature of 18°C (64.4°F) is 343m/s.

<u>Explanation : </u>

At normal atmosphere and pressure, the velocity of sound wave at increase in temperature is as follows

$\mathrm{V}=331 \mathrm{m} / \mathrm{s}+(0.6 \mathrm{m} / \mathrm{s} / \mathrm{c})^{*} \mathrm{T}$

where T is the temperature in degrees Celsius.

Using this equation, calculate the velocity of a sound wave at 20 degrees Celsius , from the following equations,

$\mathrm{V}=331 \mathrm{m} / \mathrm{s}+(0.6 \mathrm{m} / \mathrm{s} / \mathrm{c})^{*} \mathrm{T}$

$\mathrm{v}=331+(0.6)^{*} 20$

$\mathrm{v}=331+12$

V = 343 m/s

Anna11 [10]3 years ago

4 0

Answer:

342 m/s

Explanation:

The velocity of sound in air is approximated as:

v ≈ 331.4 + 0.6 T

where v is the velocity in m/s and T is the temperature in Celsius.

At T = 18:

v ≈ 331.4 + 0.6 (18)

v ≈ 342.2

The velocity is approximately 342 m/s.

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An ammeter with a resistance of 5.0 ohm is connected in series with a 3.0V cell and a lamp rated at 300 mA, 3V. Calculate the cu

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