Molecular Physics | Thermodynamics Answers

When a polar bear jumps on an iceberg, he notices that his 420 lb weight is just sufficient to sink the iceberg. What is the weight of the iceberg? Density of salt water is 64 lb/ft³ and that of iceberg is 57.2 lb/ft³.

solve this question. A body is weights first in the left and then in the right hand pan of a balance.the respective weights being 9.845grams and 9.836grams.calculate the true weight of the body and the ratio of the lenghts of the armths of the balance.

Find the mass of water that vaporizes when 2.1kg of mercury at 205 C is added to 0.11kg of water at 80 C.

A flea walking along a ruler moves from the 45 cm mark to the 27 cm mark.What is the displacement

Calculate the magnetic moment of Co2Fe3O_4

The superconducting transition temperature in a metal is 4.2 K for zero magnetic field. If the magnetic field required to destroy superconductivity at 3.2 K is 0.02T, calculate the critical magnetic field at absolute zero.

For an intrinsic semiconductor with a band gap of 0.75eV, calculate the effective density of states for the electrons and the concentration of electrons in the conduction band at T=300K, given that the effective masses of the electron and hole are equal to the free mass of the electron.

A square lattice has a side of 3.2 Å. Calculate the momentum and energy of an electron whose wave terminates at the boundary of the first Brillouin zone.

The electrical conductivity of monovalent Na metal is 2.17×10^7Ω^(-1)m^(-1). Calculate the relaxation time and the drift velocity in a field of 100 V m^(-1). Take density of Na to be 0.97 gm cm^(-3).

The net energy of a system of two atoms is given by E(r)={(-A/r^2)+(B/r^8)} where r is the inter-atomic separation. If in a stable molecule the interatomic separation is 0.5 nm and the dissociation energy is 4.0eV, calculate the constants A and B.