Acopper wire has a square cross section 2.3 mm on a side. the wire is 4.0 m long and carries a current of 3.0 a. the density of free electrons is 8.5 x 1028 m3
part a find the magnitude of the current density in the wire. express your answer using two significant figures. vaxd a/m2 j request answer submit part b find the magnitude of the electric field in the wire. express your answer using two significant figures. vaxo ? v/ e= submit request answer part c how much time is required for an electron to travel the length of the wire? express your answer using two significant figures
Answers: 3
Another question on Physics
Physics, 21.06.2019 20:30
When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m
Answers: 2
Physics, 22.06.2019 02:30
Acar moves at 12m/s and coasts up a hill with a uniform acceleration of -1.6m/s2. how far has it traveled after 6.0s?
Answers: 1
Physics, 22.06.2019 08:00
Who was the first scientist to measure speed as distance over time?
Answers: 1
Physics, 22.06.2019 10:30
Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.
Answers: 1
You know the right answer?
Acopper wire has a square cross section 2.3 mm on a side. the wire is 4.0 m long and carries a curre...
Questions
Mathematics, 20.11.2020 01:00
English, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
Computers and Technology, 20.11.2020 01:00
English, 20.11.2020 01:00
Biology, 20.11.2020 01:00
Biology, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
Arts, 20.11.2020 01:00
Mathematics, 20.11.2020 01:00
Health, 20.11.2020 01:00
