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Physics, 21.06.2019 22:30
The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
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Physics, 22.06.2019 02:30
The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?
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Physics, 22.06.2019 03:50
The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=0β with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=30β with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=45β with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=60β with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle ΞΈ=90β with the plane of polarization?
Answers: 1
Describe the changes that take place during the temperature...
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