Engineering, 17.02.2020 23:39 meramera50
2V is applied across an ultrapure Si cylinder. Determine the electron and hole drift velocities and the total current density at an electron concentration of 1016/cm3, generated by optical excitation, for the following two cylinder lengths: (a) 50 μm; (b) 50 nm.
Answers: 2
Another question on Engineering
Engineering, 03.07.2019 15:10
Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.
Answers: 1
Engineering, 04.07.2019 18:10
Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.
Answers: 2
Engineering, 04.07.2019 18:10
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
You know the right answer?
2V is applied across an ultrapure Si cylinder. Determine the electron and hole drift velocities and...
Questions
Mathematics, 11.01.2021 22:10
Mathematics, 11.01.2021 22:10
Chemistry, 11.01.2021 22:10
Mathematics, 11.01.2021 22:10
Mathematics, 11.01.2021 22:10
Advanced Placement (AP), 11.01.2021 22:10
Mathematics, 11.01.2021 22:10
