Engineering, 15.11.2019 19:31, kamryn69
We make a quantum well by sandwiching a 6 nm layer of gaas (eg = 1.43 ev) between two alas with a bandgap of 2.18 ev. assume 2/3 of the bandgap difference appears as conduction band discontinuity, and the rest in the conduction band. the electron and hole effective masses in gaas are 0.67m0 and 0.5m0, respectively. if led is made out of this heterostructures, what is the lowest photon energy that can be emitted from this gaas layer? if a photodetector is made out of this, what is the longest wavelength that can be detected? assume the infinite potential well in your calculation
Answers: 1
Engineering, 04.07.2019 18:10, ashleybaber4966
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
Engineering, 04.07.2019 18:10, bckyanne3
Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.
Answers: 1
Engineering, 04.07.2019 18:10, redrosesxx
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
Answers: 3
Engineering, 04.07.2019 18:10, nandalabella06
True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure
Answers: 2
We make a quantum well by sandwiching a 6 nm layer of gaas (eg = 1.43 ev) between two alas with a ba...
Mathematics, 04.01.2021 04:00
History, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Mathematics, 04.01.2021 04:00
Advanced Placement (AP), 04.01.2021 04:00