When combustion reactions occur inside a rocket's engine, a lot of heat and pressure are released. the pressure gradient is much larger inside the rocket than outside, which causes the gaseous products to rush out of the rocket. what does this create?

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.