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Dmitrij [34]
2 years ago
8

What is the potential energy of a 2-kg book sitting on a shelf 2 meters above the ground?

Chemistry
1 answer:
lys-0071 [83]2 years ago
8 0

Answer:

Explanation:

<u><em>What is the potential energy of a 2-kg book sitting on a shelf 2 meters above the ground?</em></u>

<em></em>

PE = MGH, that is, potential energy = mass x gravity x height.

2*2*9.8=

39.2 joules

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Answer:

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Explanation:

Determine whether the given compound name or formula contains a polyatomic ion.

  • NH₄Cl. YES. It contains the polyatomic ion ammonium NH₄⁺.
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To calculate the mass defect for given energy released, we use Einstein's equation:

E=\Delta mc^2

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\Delta m = mass change = ?

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Now put all the given values in above equation, we get:

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do you mean?

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