7- A mass initially at O moves 10.0 m to the east and then 5.0 m to the north. What is the final displacement of the mass?

For a particular reaction, ? h = -144.6 kj and ? s = -301.2 j/k. calculate ? g for this reaction at 298 k.

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?