Earth's rapid rotation makes its axis sweep out the shape of a cone, like a heavy top slowing down. This motion is known as ____
a. momentum
b. precession
c. revolution
d. precision
e. recession
b
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Which of the following people did NOT accept a heliocentric model for the universe?
a. Kepler b. Copernicus c. Tycho d. Galileo e. Newton
Current: A jeweler needs to electroplate gold, having an atomic mass of 196.97 g/mol, onto a bracelet. He knows that the charge carriers in the ionic solution are singly-ionized gold ions, Au+, and has calculated that he must deposit 0.20 g of gold to reach the necessary thickness. How much current does he need to plate the bracelet in 3.0 hours? (e = 1.60 × 10-19 C, NA = 6.02 × 1023 atoms/mol)
A. 9.1 mA B. 540 mA C. 33 A D. 1800 mA
The number of daylight hours at any place on Earth's oceans depends on the ______________ and the ______________ of the year
Fill in the blank(s) with correct word
A Carnot engine is
A. one that would violate the second law of thermodynamics. B. a theoretical engine having the highest possible efficiency for the temperatures involved. C. equivalent to the gasoline internal combustion engine. D. currently in production for the new generation of imported cars.