The Sun appears to travel daily in the sky
a. one degree in 4 minutes.
b. 7 ° in one hour.
c. 360° in 12 hours.
d. 23.5° in one year.
a
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Of all the forms of electromagnetic radiation, the one with the lowest frequency is:
A) gamma rays. B) ultraviolet rays. C) visible light. D) microwaves. E) radio waves.
If you want to cross a river in a motorboat in the least amount of time (least time in water), you should head
A) straight across the river. B) slightly upstream. C) slightly downstream. D) the time will be independent of how you head your boat E) directly downstream.
What mechanism is most responsible for generating the internal heat of Io that drives volcanic activity?
A) accretion B) radioactive decay C) differentiation D) tidal heating E) bombardment
If a Cu2+ ion drops through a potential difference of 12. V, it will acquire a kinetic energy (in the absence of friction) of
A) 12. eV. B) 6.0 eV. C) 24. eV. D) 12. J. E) 6.0 J.