2 A machine gun fires bullets, each with mass m = 55 g at a speed of u = 450 m.s1. The gun fires 5.0 bullets per second. Let's use it as a rocket engine. What thrust does it produce? Thrust N.

Describe your approach to determining the distance between the electron and proton in an atom if the potential energy U of the electron is known to be 14 eV. а. Use the law of conservation of energy. b. Use Coulomb's law. С. Use the definition of electrostatic potential energy U of one point charge q at position r in the presence of an electric potential. d. Use Newton's second law.

hw q 6

HW Q.5