Physics, 01.07.2020 20:01, 2024daisjavien
An electron emitter produces electron beams with changing kinetic energy that is uniformly distributed between three and seven joules. Suppose that it is possible to adjust the upper limit of the kinetic energy (currently set to seven joules). (a) What is the mean kinetic energy? (b) What is the variance of the kinetic energy? (c) What is the probability that an electron beam has a kinetic energy of exactly 3.2 joules? (d) What should be the upper limit so that the mean kinetic energy increases to eight joules? (e) What should be the upper limit so that the variance of kinetic energy decreases to 0.75 joules? EXERCISES FOR SECTION 4-5 Problem available in WileyPLUS at instructor’s discretion. Tutoring problem available in WileyPLUS at instructor’s discretion.
Answers: 2
Physics, 21.06.2019 18:10, andrejr0330jr
How does the space charge width change with forward and reverse bias? also, calculate the space charge width for a reverse bias of 4v on a silicon pn junction at t = 300k and doping concentrations of na = 5x1015cm-3 , nd = 5x 1016 cm-3 .
Answers: 3
Physics, 22.06.2019 03:30, natu2072
Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n
Answers: 1
Physics, 22.06.2019 08:30, khambay
Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.
Answers: 3
An electron emitter produces electron beams with changing kinetic energy that is uniformly distribut...
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