Electromagnetic induction occurs in a coil when there is a change in
A) electric field intensity in the coil.
B) magnetic field intensity in the coil.
C) electromagnetic polarity.
D) none of the above
Answer: B
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a. apparent brightness b. apparent magnitude c. zenith d. angular diameter e. color
If we had sent a radio signal to an advanced civilization in 2006 which is located in the zeta reticuli star system approximately 39 light-years away and the signal was immediately replied to, when would the reply arrive back at Earth?
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All of the following are base units of the SI system except:
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A. is always hotter than in the shade B. is always the same as in the shade C. is sometimes cooler than in the shade D. is not well defined