PHYS 122 Midterm: Phys122EquationSheetExam3

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turquoisegnu128

31 Jan 2019

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Physics

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PHYS 122

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Document Summary

Potential energy of magnetic dipole. Field due to moving charge e = 1. 60 10 19 c k = 8. 99 10 9 n m 2 / c2. = 8. 85 10 12 c2 /(n m 2 ) = 9. 11 10 31 kg m e v x. + a t x av x = 1 v. 0 x + v v x t = 1. B (where l is the length of the wire) Magnetic field on axis of loop. Due to a straight wire segment. Magnetic flux, uniform field, with n turns. Rod moving perpendicular to its length and b. Energy density in a magnetic field m = u. I (t) = i dt f 1 e t / .

Related Questions

A cyclotron accelerates two protons directly toward each other,each with a speed of 1050 km/s, measured relative to the earth.Find the maximum electric force that these protons will exert oneach other.

This is all the information I was given, and this is how I tried tosolve. Can someone please work the problem? I'm out of time, andcompletely frazzled. All of my calculations have been wrong.

V = 1050 km/s

Permittivity of free space (e0) = 8.85*10-12

Mproton= 1.67*10-27

Charge of electron (e) = 1.602*10-19

1. k = 1/4*pi*e0 = 1.3 * 1011

2. r = ke2/mv2 = 5.84 * 1021

3. Fmax = ke2/r2 =?

015 (part 1)
An electron is accelerated by a 6.7 kV poten-
tial difference.
The charge on an electron is 1.60218 Ã
10â19 C and its mass is 9.10939 Ã 10â31 kg.
How strong a magnetic field must be expe-
rienced by the electron if its path is a circle of
radius 5.9 cm?
Answer in units of T.

016 (part 2)
The magnetic force on a straight 0.23 m seg-
ment of wire carrying a current of 4.5 A is 1.6
N.
What is the magnitude of the component
of the magnetic field that is perpendicular to
the wire?
Answer in units of T.

017 ( part 3)
A segment of wire carries a current of 61 A
along the x axis from x = â6 m to x = 0 and
then along the z axis from z = 0 to z = 3.1 m.
In this region of space, the magnetic field is
equal to 21 mT in the positive z direction.
What is the magnitude of the force on this
segment of wire?
Answer in units of N.

018 (part 4)
A wire carrying a current 30 A has a length
0.1 m between the pole faces of a magnet at
an angle 60 â¦ (see the figure). The magnetic
field is approximately uniform at 0.5 T. We
ignore the field beyond the pole pieces.

What is the force on the wire?
Answer in units of N.

PHYS 122 Midterm: Phys122EquationSheetExam3

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