The average speed of a Nitrogen molecule in air is about 764 m/s, and its mass is about 4.68 × 10^−26 kg. If it takes 2.9 × 10^−13 s for a nitrogen molecule to hit a wall and rebound with the same speed but in the opposite direc- tion, what is the magnitude of the average acceleration of the molecule during this time interval?
Answer in units of m/s2.
What is the magnitude of the average force that the molecule exerts on the wall?
Answer in units of N.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.