Physics, 19.07.2019 16:00 19colemankl
What is the threshold frequency ν0 of cesium? note that 1 ev (electron volt)=1.60×10−19 j. express your answer numerically in hertz?
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In positive numbers less than 1, the zeros between the decimal point and non zero are significant
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Physics, 22.06.2019 13:50
The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?
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Physics, 23.06.2019 01:20
Afisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. it takes a time of 2.70 s for the boat to travel from its highest point to its lowest, a total distance of 0.700 m. the fisherman sees that the wave crests are spaced a horizontal distance of 6.50 m apart. a. how fast are the waves traveling? b. what is the amplitude a of each wave?
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Physics, 23.06.2019 02:30
Five renewable energy resources are wind, sunlight, moving water and geothermal energy. question 2 options: true false
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What is the threshold frequency ν0 of cesium? note that 1 ev (electron volt)=1.60×10−19 j. express...
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