The direction of polarization of an electromagnetic wave is taken by convention to be
A. the electric field direction.
B. the magnetic field direction.
C. the direction of 
D. perpendicular to the electric field direction.
E. None of these choices are correct.
A. the electric field direction.
Physics & Space Science
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Charge: How many electrons are necessary to produce 1.0 C of negative charge? (e = 1.60 × 10-19 C)
A. 6.3 × 1018 B. 6.3 × 109 C. 1.6 × 1019 D. 1.6 × 109 E. 6.0 × 1023
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Ionized atoms are quite resistant to joining in chemical interactions
What will be an ideal response?
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The _______________ supposes that planets form in the rotating disks of gas and dust around young stars
Fill in the blank(s) with correct word
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The electric resistance of a superconductor is
A) zero. B) infinite. C) usually lower than ordinary resistors. D) none of the above
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