Suppose that you have a solution containing a substance whose molecule has two quantum states corresponding to different orientations of a certain subgroup of atoms. The energy difference between these two molecular states is ΔE = 0.10 eV. You are running an experiment where no more than 5% percent of the molecules can be in the higher-energy state, or it will cause unacceptable noise. Can you run the experiment at room temperature, or do you need to cool your solution?

Consider the wave function shown for an n=3 electron on a linear molecule. Which of the following regions does NOT have a probability of finding an electron equal to 33.3%? x=0 H x=2L/3 x=L x=L/3 Between x = L/6 and x = L/2 Between x = 0 and x = L/2 Between x = L/3 and x = 2L/3 Between x = 2L/3 and x = L

We have a piece of Si (shown below) with dimensions 50 um x 200 um x 0.25 um. The Silicon is doped uniformly with ND = 1014 cm3. What is the resistance of the slab when measured along the length (200 um)? %3| If a light with photonic energy greater than the bandgap of Si were to be shone from the top surface such that it produces uniform hole-electron pairs Ap =An = 5E12 cm-3 throughout the slab, what would be the ratio of the illuminated conductivity vs the dark conductivity? What is the ratio of conductivity due to holes vs the conductivity due to electrons under illumination? How about in the dark? 200 Nm

Graph below shows the electron occupancy probability P(E) as a function of energy for Bismuth (mBi = 3.47 × 10-25 kg) at the temperature T = 0 K. What is the number of conduction electrons per unit volume for Bismuth? 1 1 2 3 4 5 6 7 8 E (ev) P(E)