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Physics, 22.06.2019 05:00
Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
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Physics, 22.06.2019 05:40
Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.
Answers: 3
Physics, 22.06.2019 09:30
The necleus of an atom is made up of what subatomic particles?
Answers: 1
What is meant by a transverse wave?...
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