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algol13
2 years ago
8

A wave has wavelength of 8m and a speed of 360 m/s. What is the frequency of the wave?

Physics
1 answer:
Naily [24]2 years ago
8 0

Answer:

45~ \text{Hz}.

Explanation:

\text{Frequency,}~ f = \dfrac{v}{\lambda}\\\\\\~~~~~~~~~~~~~~~~~~=\dfrac{360~ \text{ms}^{-1}}{8~ \text m}\\\\\\~~~~~~~~~~~~~~~~~~=45~ \text s^{-1}\\\\\\~~~~~~~~~~~~~~~~~~~=45~ \text{Hz}

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Answer:

Explanation:

Given that,

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M = 24kg

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Using equation of motion

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Second case

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Using equation of motion

y = ut + ½at², where u = 0m/s

3 = ½a × 3.1²

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M•g•R - Mf = I•a / R + M•a•R

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1.0406•I + Mf = 141.264 - 8.99

1.0406•I + Mf = 132.274 equation 2

Solving equation 1 and 2 simultaneously

Subtract equation 1 from 2,

Then, we have

1.0406•I - 0.4726•I = 132.274 - 68.5832

0.568•I = 63.6908

I = 63.6908 / 0.568

I = 112.13 kgm²

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