Physics, 15.04.2021 14:00 zwalkert01
Theresistance per unit length of a piece of a copper wire with circular cross-section with diameterof 1.03 mm is 2.5 x 10-4Ω/cm. concentration of free electrons is 8.4 x 1028/m3. The current densityis 2.1 x 106A/m2(Assume that the free hole concentration equal zero).
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Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules
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Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?
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Properties seen when one one substance changes to another are known as properties
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Theresistance per unit length of a piece of a copper wire with circular cross-section with diametero...
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