Physics, 19.02.2021 08:30 khloenm309
The threshold wavelength for cesium oxide is 7,000 angstroms, and for tungsten is 2,730 angstroms. A chemistry student was testing cesium and tungsten and found cesium emits light with a particular wavelength, but tungsten does not. What would be the most reasonable range of angstroms for the wavelength of the light that the student used? Explain your answer.
Answers: 3
Physics, 22.06.2019 15:20
Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2
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Physics, 22.06.2019 22:00
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Physics, 23.06.2019 02:00
Abeam of light shining from water to air strikes the surface at an angle greater than 48 degrees and produces total internal reflection. if the incident beam is at a 50 degree angle what angle is the reflected beam 13 25 50 100
Answers: 3
The threshold wavelength for cesium oxide is 7,000 angstroms, and for tungsten is 2,730 angstroms. A...
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