If the electron is initially in the ground level, E1=0.625E[infinity]E1=0.625E[infini ty], and absorbs a photon, what maximum wavelength can the photon have and still liberate the electron from the well?

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9

You can melt ice by applying pressure because the solid/liquid line has a slope.