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CaHeK987 [17]
3 years ago
6

What unit is used to measure the amount of energy used?

Physics
1 answer:
NNADVOKAT [17]3 years ago
5 0

Answer: Joule

Explanation:

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What speed would a fly with a mass of 0.55g need in order to have a kinetic energy of 7.6 •10^4 j?
masya89 [10]

Answer:

16613 m/s

Explanation:

Given that

mass of the fly, m = 0.55 g = 0.55*10^-3 kg

Kinetic Energy of the fly, E = 7.6*10^4 J

Speed of the fly, v = ? m/s

We know that the Kinetic Energy is that energy that an object, in this case, the fly, possesses due to its motion.

The Kinetic Energy, KE of any object is represented by the formula

KE = 1/2 * m * v²

If we substitute the values in the relation, we have,

7.6*10^4 = 1/2 * 0.55*10^-3 * v²

v² = (15.2*10^4) / 0.55*10^-3

v² = 2.76*10^8

v = √2.76*10^8

v = 16613 m/s

Thus, the fly would need a speed of 16.6 km/s in order to have a Kinetic Energy of 7.6*10^4 J

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3 years ago
Where does the engery of an earthquake originate
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The legal tradition that kept women from owning property and holding public office came to the United States from
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3 years ago
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Which statement below concerning the photoelectric effect is true? View Available Hint(s) Which statement below concerning the p
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There is a threshold frequency for each metal, and only light of a frequency higher than this threshold causes electrons to be emitted from the metal surface.
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What is the resistance of a 600 W kettle that draws a current of 5.0 A? please answer with steps
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2 years ago
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