2 years ago

4. Marcia consumes 8.4 X 10.J (2000 food calories) of energy per day while maintaining a constant weight.

Physics

1 answer:

Crank2 years ago

5 0

Answer:

8.40 is your answer.

Explanation:

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3. What is the potential energy of a 8 Newton book sitting on a shelf that is 12 meters high?

Svetradugi [14.3K]

Answer:

P = 96 J

Explanation:

Given that,

Weight of the book, W = mg = 8 N

It is placed at a height of 12 m

We need to find the potential energy of the book. The potential energy of an object is given by the formula as follows :

E = mgh

mg = Weight

$E=8\ N\times 12\ m\\E=96\ J$

So, the potential energy of the book is 96 J.

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