The diameter of a helium attom is .10nm. calculate the density of the helium attom in g/cm^3 (assume that it is a spear)

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

How do we measure or think of speed in the united states?

Observations show that interstellar clouds can have almost any shape and