Calculate the mass of ice that would melt when 2kg of copper is quickly transferred from 15 boiling water to a block of ice without heat loss
Specific heat capacity of copper = 400JKgK
Latent heat of fusion of ice = 3.3 x 10 JKg
A. 8/33kg
B. 33/80kg
C. 80/33kg
D. 33/8kg

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?