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jekas [21]
3 years ago
14

You observe lighting striking and then hear to sound 8 seconds later. The speed of sound in air is 340 m/s. How

Physics
1 answer:
Leto [7]3 years ago
7 0

Answer:

2.72 Kilometers

Explanation:

8 × 340 m/s = 2720 m = 2.72 Kilometers

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Find the angle for the third-order maximum for 591 nm wavelength light falling on a diffraction grating having 1460 lines per ce
Marat540 [252]

Answer:

15.32°

Explanation:

We have given the wavelength \lambda =591nm=591\times 10^{-9}m

Diffraction grating is 1460 lines per cm

So  d=\frac{10^{-2}}{1460}=6.71\times 10^{-6}m (as 1 m=100 cm )

For maximum diffraction

dsin\Theta =m\lambda here m is order of diffraction

So 6.71\times 10^{-6}sin\Theta =3\times 591\times 10^{-9}

sin\Theta =0.264

\Theta =15.32^{\circ}

6 0
3 years ago
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nirvana33 [79]

Answer:

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A bungee jumper feels weightless as she falls toward the earth.what accounts for her weightless feeling when she fall freely?1.
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