What is the sequence of energy transformations that occur in a nuclear reactor?
a. nuclear energy- mechanical energy- thermal energy- electrical energy
b. nuclear energy- thermal energy- mechanical energy-electrical energy
c. thermal energy-nuclear energy-mechanical energy-electrical energy
d. electrical energy-thermal energy-mechanical energy-nuclear energy

Option (b)

Explanation:

A nuclear reactor is a set up in which nuclear fission takes place and then the energy released is used to generate electrical energy.

Initially the nuclear energy is released by the fission of Uranium or reactor fuel.

Now, this nuclear energy is used to heat the water, then the energy from the hot water or steam is used to rotate the turbine, finally the turbine rotate and the electrical energy is generated by the generator.

So, the correct sequence is

nuclear energy - thermal energy - mechanical energy - electrical energy

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the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer