SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two copies of the same book are in a bookcase. One book is twice as high as the other. They have the same potential energy
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -A book sitting on a shelf in the library is said to have potential energy because if it is nudged off the shelf, gravity will accelerate the book, giving the book kinetic energy.
Detailed explanation-2: -Potential energy is stored energy and the energy of position. Chemical energy is energy stored in the bonds of atoms and molecules.
Detailed explanation-3: -Answer and Explanation: The answer is 1. A reaction cannot be exothermic overall if activation energy is required. The statement is false because reactions can be exothermic overall even if activation energy.
There is 1 question to complete.