Engineering, 31.12.2019 04:31 renee9913
Boltzmann a gas containing n-1021 hydrogen atoms is heated to a temperature of 3 x 103 k. 1) on average, about how many atoms will have their electrons excited from the ground level s to the first excited level p? the s-level contains 2 states and the p-level contains 6 states, and the energy splitting is 10.2 ev·(you may ignore all the other hydrogen states.) o103 atoms 2 x 10* atoms 4 x 107 atoms 0 o5 x 109 atoms 6 x 1011 atoms
Answers: 2
Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
Answers: 3
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:10
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
Answers: 1
Engineering, 04.07.2019 18:10
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
Boltzmann a gas containing n-1021 hydrogen atoms is heated to a temperature of 3 x 103 k. 1) on aver...
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