A100gm copper block is heated in boiling water for 10min and then it is dropped into 150gm of water at 30 c in a 200gm calorimeter. if the temperature of water is raised to 33.6 c . determine the specific heat of material of calorimeter?

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?