Afaraday ice pail similar to the one you will use in the experiment is used in this question. the principle of its operation relies on the proportionality between the charge on the inner pail and the potential difference between the inner pail and ground. suppose the relationship between charge � and potential difference � is given by � = � ∙ 2.90 ×10gj^.when a blue wand and a white wand are inserted into the ice pail at the same time without the wands touching, the electrometer reading was +74.6 . when only the white wand was removed, the electrometer reading changed to −25.0 . (a) how much charge resides on the blue wand? (b) how much charge resides on the white wand? (c) when the two wands are held 4.75 �� apart, what is the magnitude of the force exerted on either wand, assuming each wand is considered a point charge? is the force attractive or repulsive? (d) if the charge of one electron is −1.60 × 10gjc�, how many electrons are on the blue wand? assume that no leakage of charge occurs and that the charge on the pail is the same as the charge on the wand recall that j ^_`a = 9.00×10c ��e �e.

Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors

In a steady-flow steam power plant system, two adiabatic high-pressure and low-pressure turbines ane used to generate power. superheated steam enters the high-pressure turbine at 8 mpa and 550°c. the steam expands in the high-pressure turbine to a saturated vapor at 3 mpa. in order to increase the powe generation of the power plant, another steam turbine working in a lower pressure ranges is deployed. the outlet vapor from the first turbine is heated up at a boiler to the temperature of 500 c at the constant pressure of first turbine's outlet (3 mpa). then, the vapor enters the second turbine and produces extra work. the exit conditions of the second turbine are 5o kpa and 90 percent quality. if the total power output of the power plant is 25 mw, determine a) the mass flow rate of the water (kg/s). b) heat transfer rate in the boiler (mw). (30 points) 3 mpa 00 c 8 mpa s0 c high pres turbine low pres boiler turbine 50 kpa 3 mpa 09 saturated vapor t heat engine, shown in the figure, operates between high temperature and low temperature of through a heat 4. a carnot tn and tu respectively. this heat engine receives energy from a heat reservoir at t exchanger where the heat transferred is proportional to the temperature difference as ? = k (z,-7, ). it rejects heat at a given low temperature tl. to design the heat engine for maximum work output, find the high temperature, th, as a function of tes and t. (15 points) qe

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v