For large mass number nuclei which are stable, the ratio of protons to neutrons is
a. equal to 1
b. greater than 1
c. less than 1
d. unrelated to the stability of nuclei
e. almost 2 to 1
c
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The EPR argument assumes which of the following to conclude that quantum mechanics is incomplete?
A. Quantons must have objectively real properties. B. Superluminal communication is impossible. C. Both assumptions. D. Neither assumption.
If a solar eclipse occurs today when might you have a chance to see a lunar eclipse?
A. in 27 days B. in 11 days C. in 21 days D. in 15 days
The three colors that comprise the image on a TV screen are
A) red, blue, and yellow. B) red, blue, and green. C) yellow, blue, and green. D) magenta, cyan, and yellow. E) red, green, and yellow.
The nichrome heating element in an electric drier operates on 240 V and generates heat at the rate of 2.0 kW. The heating element shorts out and, in repairing it, the repairman shortens the nichrome wire by 10%
(Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element? A) The power is still 2.0 kW. B) The power increases to 2.2 kW. C) The power decreases to 1.8 kW. D) None of the given answers is correct.