In order to trap the starship Enterprise, the Klingons build a huge solenoid 10. light years long with a diameter of 2. million kilometers. Every kilometer length of the solenoid contains 100. turns of wire.
(a) What magnetic field is produced in the center of the solenoid with a current of 2000. Amperes? (Give your answer in MKS units.)
(b) This is how many Gauss?
Question 2
One consequence of Einstein's theory of special relativity is that
A) absolute Earth velocity can be measured.
B) absolute velocity of stars can be measured with respect to the ether wind.
C) simultaneity is not absolute.
D) relative speed can not be measured.
E) nothing is conserved because it changes.
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