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Anni [7]
3 years ago
12

5. What is the frequency of a sound wave when the speed of the sound is 340 m/s and has a wavelength of 1.21 m?​

Physics
1 answer:
LekaFEV [45]3 years ago
3 0

Explanation:

v = f × /\

340 = 1.21f

f = 280.99Hz

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Answer:

1777.92 m/s

Explanation:

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Acceleration due to gravity is given by

g=\dfrac{GM}{R^2}\\\Rightarrow M=\dfrac{gR^2}{G}

The expression of escape velocity is given by

v=\sqrt{\dfrac{2GM}{R}}\\\Rightarrow v=\sqrt{\dfrac{2G}{R}\dfrac{gR^2}{G}}\\\Rightarrow v=\sqrt{2gR}\\\Rightarrow v=\sqrt{2\times 2.9\times 545000}\\\Rightarrow v=1777.92\ m/s

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3 years ago
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13.8 N

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Answer:

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Explanation:

From the question,

Density = Mass/Volume

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Hence the mass of the substance is 3600 kg

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