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# S14 PH 223 34:1-4

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## Richard Datwyler

on 13 February 2017

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#### Transcript of S14 PH 223 34:1-4

The rock frame?
The laboratory frame
A rocket cruises past a laboratory at 1.00 x 10^6 m/s in the positive x direction just as a proton is launched with velocity ( in the lab frame) v = 1.41 x 10^6 i+1.41 x 10^6 j m/s. What are the proton's speed and its angle from the y-axis in
Scientists in the laboratory create a uniform electric field E = 1.0 X 10^ 6 k V/m in a region of space where B=0. What are the fields in the reference frame of a rocket traveling in the positive x-direction at 1.0 x 10^6 m/s?
A rocket zooms past the earth at v =2.0 x 10^6 m/s. Scientists on the rocket have created the electric and magnetic fields of 1.0 T and 1.0 x 10^6 V/m (as drawn on board). What are the fields measured by an earth bound scientist?
Show that this is the same field around the wire
What is the magnetic field strength at the edge of the capacitor
What is the magnetic field strength inside the capacitor at a point 0.50 cm from the axis?
A 2.0 cm diameter parallel plate capacitor with a 1.0 mm spacing is being charged at a rate of 0.50 C/s.
7.0 cm from axis
3.0 cm from axis
On axis
A 10 cm diameter parallel plate capacitor has a 1.0 mm spacing. The electric field between the plates is increasing at a rate of 1.0 x 10^6 V/m s. What is the magnetic field strength
"I had a hard time understanding when there is a magnetic field vs an electric field depending on the person's perspective and how to calculate what direction it points in."
"Why does Ampere's law have a problem with capacitors?
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