Calculate the average drift speed vd of electrons traveling through a copper wire with a cross-sectional area of 1.10 mm2 when carrying a current of 1.40 a (values similar to those for the electric wire to your study lamp). it is known that about one electron per atom of copper contributes to the current. the atomic weight of copper is 63.54 grams/mol, and its density is 8.92 g/cm3. first, calculate the number of current carrying electrons per unit volume, n.
n=
drift speed vd= m/s
Answers: 2
Physics, 21.06.2019 16:20, livichavezp2kcd3
Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m. the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.
Answers: 1
Physics, 21.06.2019 17:00, edwardp03418
Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?
Answers: 1
Physics, 21.06.2019 23:30, tdahna0403
Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle
Answers: 1
Calculate the average drift speed vd of electrons traveling through a copper wire with a cross-secti...
Biology, 10.10.2021 04:00
Mathematics, 10.10.2021 04:00
Biology, 10.10.2021 04:00
History, 10.10.2021 04:00