3. a train has broken through the wall of a train station. during the collision, what can be said about the force exerted by the train on the wall?
a. the force exerted by the train on the wall was larger than the force the wall could exert on the train.
b. the wall cannot be said to "exert" a force; after all, it broke.
c. the force exerted by the train on the wall was the same in magnitude as the force exerted by the wall on the train.
d. the force exerted by the train on the wall was less than the force exerted by the wall on the train.

c. The force exerted by the train on the wall was the same in magnitude as the force exerted by the wall on the train.

Explanation:

Newton's Third Law states that if a body exerts a force on another body, this body exerts a force of equal magnitude but in the opposite direction on the body that produces it. So, one body cannot exert a force on another without experiencing a force in itself.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."