Which of the following describes a nuclear reactor?
a nuclear reactor converts heat energy into nuclear fusion energy.
a nuclear reactor converts energy from fission nuclear energy into heat energy.
a nuclear reactor collides two nuclei together at high speeds to produce fusion nuclear energy.
a nuclear reactor converts fission nuclear energy into fusion nuclear energy.

Explanation:

A nuclear reactor is a device used to manage nuclear reactions. Basically, it consist in making collide to nuclei or other subatomic particle, to produce a controlled nuclear fission, which released energy that it's converted in thermal energy, which it's also converted for a final purpose like mechanical movements. Remember that nuclear fission refers to decay of an atom, its separation into particles.

So, based on these concepts, the right answer is A nuclear reactor converts energy from fission nuclear energy into heat energy. Because other option are talking about nuclear fusion, which is not involved in a nuclear reactor.

explanation:

the masses of the objects and the distance between them

hi there!

your question asks at which segment does freezing occur.

since we're talking about water, the freezing point of water will be 32 degrees fahrenheit or below.

hope this ! ~