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yawa3891 [41]
3 years ago
15

Formula for displacement

Physics
1 answer:
MariettaO [177]3 years ago
8 0
The original velocity multiplied by time plus<span>one half the </span>acceleration<span> multiplied by the square of time</span>
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Galileo’s pendulum theory stated that the time taken to swing through one complete cycle of a pendulum depends on what?
Amanda [17]

Answer: it depends on the mass of the pendulum or on the size of the arc through which it swings.

Explanation:

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3 years ago
Find the net charge of a system consisting of 206 electrons and 161 protons. Express your answer using two significant figures.
kondaur [170]

Answer:

-72\times 10^{-19}C[/tex]

Explanation:

Both electron and proton have the same amount of charge but signs are opposite , electron contains negative charge and proton contain positive charge

Charge on 1 electron = -1.6\times 10^{-19}C

So charge on 206 electron =-206\times 1.6\times 10^{-19}C

Charge on 1 proton = -1.6\times 10^{-19}C

So charge on 161 electron =-106\times 1.6\times 10^{-19}C

So charge of the system = (-206+161)\times 1.6\times 10^{-19}C

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3 years ago
How long can you keep open beer in the fridge?
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7 0
3 years ago
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Explain why the drill bit gets hot when it's turning in the wood
alexgriva [62]
The friction between the two objects creates heat.
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3 years ago
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A railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. The ca
11Alexandr11 [23.1K]
The total momentum of the system is preserved through the collision.

Note that momentum is
P = m*v
where m = mass
v = velocity.

Initial momentum:
P1 = (30000 kg)*(2 m/s) = 60000 (kg-m)/s for the moving car
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Final momentum:
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Because momentum is preserved,
P3 = P1 + P2
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v = 1 m/s
The final velocity is 1 m/s.

Answer: 1.0 m/s
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3 years ago
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