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erastova [34]
3 years ago
8

which of the following fields of science supports evolution? a. astronomy b.geology c.biology d. all of these

Biology
1 answer:
lara [203]3 years ago
5 0

Answer:

Explanation:

biology of your talking about life evolution but all if your talking about mankind evolution and technology

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What is the Mechanical energy when
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Answer:

ME = 20 * m, where m is the mass of the pendulum

Explanation:

As we know that mechanical energy is the sum of kinetic energy and potential energy.

Since the Pendulum at its highest point has zero velocity, its kinetic energy at this point is equal to zero.

Thus, here in this mechanical energy will be equal to the potential energy only.

Potential energy is equal to the product of gravity constant, mass of the body and the height of the pendulum

Thus,

ME = PE\\

PE = m * g* h\\PE = 10 * 2* m\\

PE= 20m

Hence,

ME = 20 * m

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