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kakasveta [241]
3 years ago
6

Which of the following is true? *

Physics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0

Answer: D. Protons and neutrons

Explanation:  PLEASE GIVE BRAINLIEST IT HELPS ALOT

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A mass of 100 g stretches a spring 5 cm. If the mass is set in motion from its equilibrium position with a downward velocity of
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Answer:

Explanation:

Given

mass of spring m=100\ gm

extension in spring x=5\ cm

downward velocity v=70\ cm/s

Position in undamped free vibration is given by

u(t)=A\cos \omega _0t+B\sin \omega _0t

where \omega _0^2=\frac{k}{m}

also \frac{k}{m}=\frac{g}{L}

\omega _0^2=\frac{k}{m}=\frac{9.8}{0.05}

\omega _0=14

u(t)=A\cos(14t)+B\sin(14t)

it is given

u(0)=0

u'(0)=70\ cm/s

substituting values we get

A=0

u(t)=B\sin (14t)

u'(t)=14B\cos (14t)

70=14B

B=\frac{10}{2}

B=5

u(t)=5\sin (14t)

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3 years ago
I WILL GIVE BRAINLIEST TO WHOEVER IS CORRECT.
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Ultraviolet light with a wavelength shorter than visible light and a higher radiant energy than visible light.

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Rob is studying for an exam. He listed some properties of magnets in a Maglev train.
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A crane operater drops the cargo by turning off the electric current to the
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Answer:

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