Calculate averege speed of earth in orbit if the distance from the sun to the earth is 150 million km ??? explanation needed​

Calculate the heat capacity per object when the total energy is 4 quanta. (think of this in terms of increasing from 3.5 quanta of energy in the system to 4.5 quanta of energy in the system, if that were possible.) c4 = __ j/k/object

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

What sort of waves exhibit the doppler effect?