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aniked [119]
3 years ago
15

Which describes the rotational motion of a planet?

Physics
1 answer:
Ray Of Light [21]3 years ago
4 0
<span>B.) The motion of the planet as it spins on its axis

Please be careful with option A, 'cause it is "Revolutionary motion", many people would choose that but, it's wrong.

In short, Your Answer would be Option B

Hope this helps!</span>
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When a monochromatic light falls on a metallic surface, a number of electrons is
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If the period of oscillation of a simple pendulum is 4s, find its length. If the velocity of the bob
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Answer:

Explanation:

Because we assume the pendulum is a "mathematical pendulum" (neglecting the moment of inertia of the bob), we can find:

T=2\pi\sqrt{\frac{L}{g}} \rightarrow 4=2\pi\sqrt{\frac{L}{9.81}} \rightarrow \frac{4}{\pi^{2}}=\frac{L}{9.81} \rightarrow L \approx 3.97 m

By using the y=A\sin(\omega t)  \rightarrow v = \frac{dy}{dt}=\omega A \cos\omega t = \omega\sqrt{A^{2}-y^{2}}

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\omega = \frac{2\pi}{T}=\frac{2\pi}{4}=0.5\pi rad/s

and v = \omega A \rightarrow A=\frac{40}{0.5\pi}=\frac{80}{\pi} in centimeters (cm).

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2 years ago
All of the following processes are the ones that lead directly to the formation of sedimentary rock EXCEPT-
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melting of rock deep underground.

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When molten rocks underground called magma is solidified in the subsurface, it results into the formation of igneous bodies.

  • Sedimentary rocks forms by the accumulation of sediments.
  • Inside the basin where the sediments are deposited, they are compacted, cemented and lithified.
  • Chemical and physical weathering of rocks produces sediments.
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_________ liquids and gases exert a buoyant force.
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C. Both

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