If the Moon is 3rd quarter phase, when does it rise?
A) never B) noon C) sunset D) sunrise E) midnight
E
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The north celestial pole appears 30° above your horizon. The star Vega is on your meridian. By studying your star charts and your clocks, you determine that Vega crossed the meridian in Greenwich (England) 3 hours ago. Where are you?
A) latitude 30°N, longitude 45° west B) latitude 30°N, longitude 3° west C) latitude 60°N, longitude 45° west D) It is not possible to determine your longitude from the information given.
How much work is done by a person lifting a 2.0-kg object from the bottom of a well at a constant speed of 2.0 m/s for 5.0 s?
A. 0.22 kJ B. 0.20 kJ C. 0.24 kJ D. 0.27 kJ E. 0.31 kJ
Using ________ incidence optics, the Chandra is the X-ray equivalent of the HST
Fill in the blank(s) with correct word
The numbers in front of the formulas in a chemical
equation are referred to as a) subscripts. b) superscripts. c) coefficients. d) common denominators.