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adelina 88 [10]
3 years ago
15

How many atoms of each element are in the products?

Physics
1 answer:
Kay [80]3 years ago
4 0
The number of atoms in an element must be the same number of atoms of each element in a PRODUCT.
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A wave with a period of 0.008 second has a frequency of
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The frequency of a wave is the reciprocal of its period.

A period of 0.008 sec means a frequency of

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A fully loaded cart with a mass of 2200 kg starts from the top of a 12-meter hill on a roller coaster.
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Answer:

A. potential energy is 258720 Joule

Explanation:

A.Gravitational potential energy is: PE = m × g × h

velocity =  15.33 m/s when the car reaches the bottom of the hill.

where, m = mass

            g = acceleration due to gravity

            h = height from the bottom of hill.

The potential energy is : m×g×h

                                     =(2200×9.8×12)

                                     =258720 Joule

B. at the bottom of the hill, the potential energy is converted into kinetic energy so PE at top = KE at bottom

                    kinetic energy= \frac{1}{2}(m*v^{2})

where v = velocity

          m= mass

therefore,               v=\sqrt\frac{2*K.E}{m} {}

                         or,  v=\sqrt{\frac{2*258720}{2200} }

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