The average velocity of molecules of nitrogen gas (n2) at room temperature is around 500 m/s. if you were to raise the temperature of the nitrogen gas by 50°c what is a good estimate for the speed of the molecules?
a. 100 m/s
b. 500 m/s
c. 600 m/s
d. 200 m/s

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!