3 years ago

(PLEASE HELP FAST 20 POINTS)

1 answer:

4 0

Everything we see or do in everyday life that involves electricity in any way is the result of electrons moving from one place to another, or from one object to another. <em> (last choice)</em>

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Describe two forms of energy-efficient transportation.

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Electricity which may efficient transportation if you develop your way depending contact metal basis , such as electric train .

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A capacitor of capacitance C has charge Q and stored energy is U if the charge is increased to 2Q then energy will be A)4U B)2U

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Answer:

Explanation:

W = Vq

q = CV

W = V.CV

W = CV²

W/C = V²

V = √(W/C)

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3 years ago

Which phrase describes the thermal energy of a sample of matter?

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Answer:

where are the phrase's?

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3 years ago

If someone throws a 3 gram fry accelerating at 5 meter/second2, what is the fry’s force?

Alex

Answer:

0.015 m/s2

Explanation:

Using Newtons 2nd law.

F = ma where F = Force applied, m = mass of the object and a = acceleration acquired.

So substitute the values in SI units.

m = $\frac{3}{1000}$ kg

Therefore F = 0.003×5 = 0.015 m/s2

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3 years ago