A short current element dl → = (0.500 mm) ĵ carries a current of 5.40 A in the same direction as dl → . Point P is located at r → = (−0.730 m) î + (0.390 m) k ^ . Use unit vectors to express the magnetic field at P produced by this current element.
A short current element dl → = (0.500 mm) ĵ carries a current of 5.40 A in the same direction as dl → . Point P is located at r → = (−0.730 m) î + (0.390 m) k ^ . Use unit vectors to express the magnetic field at P produced by this current element.
A short current element
dl
→
= (0.500 mm)ĵ carries a current of 5.40 A in the same direction as
dl
→
. Point P is located at
r
→
= (−0.730 m)î + (0.390 m)
k
^
. Use unit vectors to express the magnetic field at P produced by this current element.
Certain types of particle detectors can be used to reconstruct the tracks left by unstable, fast-moving sub-atomic particles. Assume
that a track with a length of L=2.97 mm in the laboratory frame of reference has been observed. Further assume that you
determined from other detector data that the particle moved at a speed of L=0.910 ⚫ c, also in the laboratory frame of reference. c
denotes the speed of light in vacuum. What proper lifetime would you determine for this particle from the data given?
T= 4.0
S
generated worksheet
While cruising down University Boulevard you are stopped by a cop who states that you ran a red traffic light. Because you don't
want to pay the stiff fine, you are attempting a physics defense. You claim that due to the relativistic Doppler effect, the red color of
the light λ=616 nm appeared green '=531 nm to you. The cop makes a quick calculation of his own and rejects your defense.
How fast, in terms of your speed u divided by the speed of light in vacuum c, would you have to drive to justify your claim? Note
that the speed u is taken to be a positive quantity.
U 4.0
C
Chapter 28 Solutions
University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
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