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amid [387]
3 years ago
13

your friends says the helium in your birthday helium comes from radioactive decays. What is your response?

Physics
1 answer:
Nikitich [7]3 years ago
7 0
Helium is a non-toxic gas.
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Answer;

The mass value for the above kinetic energy equation is 400.0000 kg. This is equal to:

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The massless spring of a spring gun has a force constant k=12~\text{N/cm}k=12 N/cm. When the gun is aimed vertically, a 15-g pro
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Answer:

0.011 m.

Explanation:

Energy stored in the spring = Energy of the projectile.

1/2ke² = mgh ................ Equation 1

Where k = spring constant, e = extension or compression, m = mass of the projectile, g = acceleration due to gravity, h = height.

make e the subject of the equation

e = √(2mgh/k)............................. Equation 2

Given: k = 12 N/cm = 1200 N/m, m = 15 g = 0.015 kg, h = 5.0 m

Constant: g = 9.8 m/s²

Substitute into equation 2

e = √(2×0.015×5/1200)

e = √(0.15/1200)

e = √(0.000125)

e = 0.011 m.

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2 years ago
What do stars begin as
Valentin [98]
Cloud of dust and gas!
7 0
3 years ago
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NUCLEAR POWER PRODUCES LESS TOXIC SULFUR THAN COAL BURNING ELECTRICITY TRUE OR FALSE
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True because a nuclear power produces tons of high level radioactive waste that has to be disposed of carefully
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How is Newton’s 3rd law in baseball?
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Answer:Explanation: According to Newton's third law, the force exerted by the bat hitting the ball will be equal in magnitude but opposite in direction of the force the ball exerts on the bat. Generally, your arms are stiff when you hit the ball forward, so you will not feel the bat "recoiling".

Explanation:

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3 years ago
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