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KatRina [158]
3 years ago
5

The speed of an electromagnetic wave is equal to

Physics
1 answer:
Ymorist [56]3 years ago
8 0
The answer is B.  Have a good day!  :)
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Explain how the plants of a tropical rain forest contribute to the characteristic hot, humid weather associated with the area. U
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Explanation:

Case 1

Given,

initial angular speed = 0 rev/s

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\alpha = \dfrac{2-0}{7}

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using equation of rotational motion

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Case 2

Given,

initial angular speed = 2 rev/s

final angular speed = 0 rev/s

time, t = 12 s

angular acceleration of the washer

\alpha = \dfrac{\omega_f-\omega_i}{t}

\alpha = \dfrac{0-2}{13}

\alpha = -0.154\ rev/s^2

using equation of rotational motion

\omega_f^2 = \omega_i^2 + 2 \alpha \theta_2

0^2 = 2^2 + 2\times (-0.154) \times \theta_2

\theta_2 = 13 rev

total revolution in this case

\theta = \theta_1 + \theta_2

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\theta = 20\ rev

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3 years ago
State Schrodinger equation.​
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2 years ago
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