Physics, 13.12.2019 23:31 yogibear5806

Asilver wire has resistivity rho = 1.94 × 10-8 ω·m and a cross-sectional area of 7.00 mm2. the current in the wire is uniform and changing at the rate of 2400 a/s when the current is 180 a.

(a) what is the magnitude of the (uniform) electric field in the wire when the current in the wire is 180 a?
(b) what is the displacement current in the wire at that time?
(c) what is the ratio of the magnitude of the magnetic field due to the displacement current to that due to the current at a distance r from the wire?

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 16:30

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Answers: 2

Answer

Physics, 22.06.2019 20:30

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Answers: 2

Answer

Physics, 22.06.2019 21:00

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer

Answers: 2

Answer

Physics, 22.06.2019 23:40

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.

Answers: 2

Answer

You know the right answer?

Asilver wire has resistivity rho = 1.94 × 10-8 ω·m and a cross-sectional area of 7.00 mm2. the curre...

Questions