A white go-kart moving 5 m/s hits a red go-kart that is at rest. Both go-karts weigh 2 kilograms and the white go-kart travels in the opposite direction at 2 m/s after the collision. What is the velocity of the red
go-kart after the collision?
10 m/s
7 m/s
5 m/s
2 m/s

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.