Susan ran a marathon (26.2 miles) in 6.5 hours. what was susan's average speed?

Particles vibrate in a rigid structure and do not move relative to their neighbors.

What are the two basic types of satellites

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.