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

Physics & Space Science

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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

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science

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.

Physics & Space Science