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Which pole of a compass needle points to a south pole of a magnet?
Q3: A temperature difference of 10 degrees Celsius
Q4: The color of an opaque object is
Q5: When a bar magnet is thrust into
Q11: The most harmful radiations are those that<br>A)kill
Q13: Like kinds of magnetic poles repel while
Q21: Two photons have the same wavelength.They also
Q27: Monochromatic light is light of a single<br>A)wavelength.<br>B)frequency.<br>C)color.<br>D)all
Q37: A device that is used primarily to
Q54: An observer on the ground hears a
Q63: The dark lines in the sun's spectrum