Engineering, 02.04.2020 16:43 aero8030
A photomultiplier tube (PMT) contains a photoemissive cathode that emits a single electron when struck by a photon. The electron is accelerated through a series of dynodes before being collected at the anode. If each dynode emits, on average, 5.5 electrons for each incident electron, calculate the overall gain of the PMT if it contains 8 dynodes (the cathode, 8 dynodes and the final anode).
Answers: 3
Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
Answers: 1
Engineering, 04.07.2019 18:10
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
Engineering, 04.07.2019 18:20
Determine the damped natural frequencies and the steady state response of a decoupled damped forced two degrees of freedom system. 10รค1 + 2q1 20q1 10 cos t; 10q2 +4q2 + 40q2 10 cos t
Answers: 3
A photomultiplier tube (PMT) contains a photoemissive cathode that emits a single electron when stru...
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