Physics, 18.06.2020 00:57 Fireburntbudder
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 06:30
Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.
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Physics, 22.06.2019 15:10
Auniform crate c with mass mc is being transported to the left by a forklift with a constant speed v1. what is the magnitude of the angular momentum of the crate about point a, that is, the point of contact between the front tire of the forklift and the ground
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Physics, 22.06.2019 15:30
How many neutrons does element x if it’s atomic number is 28 and its mass number is 87
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The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.939...
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