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Katarina [22]
3 years ago
10

2. Jenny picks up a guitar and strums. If the sound from the string emanates out at 440 Hz,

Physics
1 answer:
erik [133]3 years ago
7 0

Answer:

6.8×10^6 m

Explanation:

f = velocity of light/ wavelength

440= 3×10^8 / wavelength

so

wavelength = 3×10^7/ 44

= 6.8×10^6 m

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The force exerted by the laser beam on a completely absorbing target is 3.5 \times 10^{-6} \ N.

The given parameters;

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The speed of the emitted laser light is given as;

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The force exerted by the laser beam on a completely absorbing target is calculated as follows;

P = Fv

F = \frac{P}{v} \\\\F = \frac{1050}{3\times 10^8} \\\\F = 3.5 \times 10^{-6} \ N

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