An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move
a. counter-clockwise around the celestial pole.
b. clockwise around the celestial pole.
c. from left to right.
d. from right to left.
e. nearly vertically upward.
a
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In what sense can you truthfully say that you are a part of every person around you?
A) We all live on the same planet and share the same resources. B) We are continually exchanging our atoms. C) We all share the same genetic code. D) There are more people alive now than have ever lived.
Silver is the metal electrode in a molar solution of Ag+ ions in a standard cell with a reference electrode.
(a) What reactions occur at the two electrodes? (b) What voltage is developed in the cell? (c) What is the Gibbs free energy change per silver ion involved in the reaction?
Write the nuclear notation for the following nuclei: Hydrogen-2, Sulfur-33, and Lead-207
What will be an ideal response?
A spaceship carrying a light clock moves at a speed of 0.960c relative to an observer on Earth. Relative to a frame of reference that is fixed with respect to Earth, how long does it take the clock on the ship to advance 1.00 s?
A) 0.960 s B) 1.22 s C) 2.59 s D) 3.57 s E) 5.83 s