Which of the following is the best definition of a closed system? A system in which there a no internal energy changes

A system in which Newton's Laws are valid

A system in which there are no external forces

A system in which the law of conservation of momentum is not valid

The answer is either

b A system in which Newton's Laws are valid

or

c A system in which there are no external forces.

Explanation:

not a, and not d

There are energy changes in a closed system.

A closed system obeys the conservation laws in its physical description.

answergravity;

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.