Heat radiation relates mainly to
A) infrared radiant energy.
B) radiation not visible to humans.
C) waves you absorb when near a hot stove.
D) all of the above
E) none of the above
Answer: D
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Which of the following statements about the Milky Way Galaxy is not true?
A) One rotation of the galaxy takes about 200 million years. B) Our solar system is located very close to the center of the Milky Way Galaxy. C) The galaxy is about 100,000 light-years in diameter. D) It contains between 100 billion and 1 trillion stars.
Suppose that a voltage surge produces 140 V for a moment in a 115-V line. What will temporarily be the output of a 100-W light bulb assuming its resistance does not change?
a. 170 W b. 122 W c. 67.5 W d. 148 W e. 74.1 W
A four dimensional image of a coffee table is depicted in a
A) tesseract. B) video. C) photograph. D) hologram.
A temperature difference of 10 Celsius degrees is also equal to a temperature difference of 10 on the
A) Fahrenheit scale. B) Kelvin scale. C) both of these D) neither of these