In the classical model of a hydrogen atom, an electron orbits a proton with a kinetic energy of +13.6 ev and an electric potential energy of -27.2 ev hint (a) use the kinetic energy to calculate the classical orbital speed (in m/s). m/s (b) use the electric potential energy to calculate the classical orbital radius in m)

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.