A self-amplifying reaction and a nuclear explosion in a nuclear ...

[bobypop]

A self-amplifying reaction and a nuclear explosion in a nuclear power plant are prevented in large part by
 
  A) the regular addition of uranium-239 to the fuel.
  B) control rods that absorb extra neutrons.
  C) the production of plutonium-239.
  D) fuel rods that absorb tremendous amounts of heat.

Question 2

In the summer, the heater on an automobile still works well, even though you do not need it. This is because the heater in a car draws on surplus heat generated when gas is used to power the engine.
 
  This extra heat, wasted in the summer, is produced as a result of the A) Law of the Conservation of Momentum.
  B) First Law of Thermodynamics.
  C) Law of Inertia.
  D) Second Law of Thermodynamics.

[xMRAZ]

Answer to Question 1

B

Answer to Question 2

D

[bobypop]

Thanks for the timely response, appreciate it

[aruss1303]

Gracias!