A neutron in a nuclear reactor makes an elastic head-on collision with a carbon atom initially at rest. (The mass of the carbon atom is 12 times that of the neutron.) What fraction of the neutron's kinetic energy is transferred to the carbon atom?

The fraction of the neutron's kinetic energy is 0.284.

Explanation:

explanation is in the following attachment        

which statement about this sum is true? −245+2.7

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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