Given the quantum mechanical energy levels of a particle in a two-dimensional box are h2 y 1,2,3 8ma2(s^+s) calculate the density of states ω(e)de and use this to find the translational partition function of the two-dimensional ideal gas. derive the function using an alternative method [hint: q'eeny may be expressed using an integral] (i) (ii) iii find the equation of state, the energy e, the heat capacity ca and the entropy. (note: a → area, compare with v → volume in 3d case)

Atomic nuclei of almost all elements consist of

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical