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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?
Answers: 2
Physics, 22.06.2019 16:30
Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?
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Physics, 23.06.2019 00:00
What energy transformations occur each time the skateboarder rolls up the ramp?
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Physics, 23.06.2019 01:00
What is the frequency if a wave that pases a given pount 22 times in 2 seconds
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What is the difference between hard x-rays and soft x-rays? I mainly need to know what soft-rays are...
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