Physics, 09.10.2019 05:20, djjdjdjdjdNfnd1941
Light from a he-ne laser (wavelength 632.8 nm) falls on a photo-emissive cell with a quantumefficiency of 10-4(the number of electrons emitted per incident photon). if the laser power is 2 mw, and all liberated electrons reach the anode, how large is the current? could you estimate the work function of the cathode material by varying the anodevoltage of the photocell?
Answers: 3
Physics, 22.06.2019 13:00, help1572
Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?
Answers: 1
Physics, 22.06.2019 15:30, pandapractice6834
Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work
Answers: 1
Physics, 22.06.2019 15:30, anahitrejo1
1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?
Answers: 1
Light from a he-ne laser (wavelength 632.8 nm) falls on a photo-emissive cell with a quantumefficien...
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