In class we learned that particles and radiation field can exchange energy, but the total energy needs to be conserved. find out whether a non-relativistic free electron can absorb a photon from a light field. to that end set up total (electron and radiation field) energy and momentum conservation relations by assuming that the electron velocity changes from v to u after a photon with energy ω and momentum h. k =h a/c has been absorbed. can both energy and momentum conservation of the electron-photon system be fulfilled at the same time?
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Physics, 22.06.2019 03:50
The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error
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Physics, 22.06.2019 07:30
Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?
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Physics, 22.06.2019 10:00
**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
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Physics, 22.06.2019 12:00
Explain what happens at the saturation point when adding salt to water at room temperature.
Answers: 3
In class we learned that particles and radiation field can exchange energy, but the total energy nee...
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