Physics, 28.07.2019 06:00 calthecrystal
Which of the following statements apply to the photoelectric effect? 1) wave theory accurately describes the photoelectric effect. 2) quantum theory accurately describes the photoelectric effect. 3) the photoelectric effects can be explained in the same way that diffraction and interference are explained. 4) the photoelectric effect offers evidence of the wave nature of light. 5) the photoelectric effect demonstrates that photons are small enough to interact with individual electrons.
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Physics, 22.06.2019 06:40
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
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Physics, 22.06.2019 10:30
If y gets smaller as x gets bigger and y have an relationship?
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Physics, 22.06.2019 12:30
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
Which of the following statements apply to the photoelectric effect? 1) wave theory accurately desc...
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