If an object is moving, it has energy. we call energy of motion as ___________.
Fill in the blank(s) with the appropriate word(s).
kinetic energy
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Alkaloid salts are not very soluble in the organic solvent diethyl ether. What might happen to the free-base form of caffeine dissolved in diethyl ether if gaseous hydrogen chloride, HCl, were bubbled into the solution?
A) A second layer of water would form. B) Nothing, and the HCl gas would merely bubble out of solution. C) The diethyl ether insoluble caffeine salt would form as a white precipitate. D) The acid/base reaction would release heat, which would cause the diethyl ether to start evaporating.
A wheel is spinning on an axle. The linear velocity of a point on the rim is simply the product of the radius times the rotational velocity, as long as the rotational velocity is measured in units of
A. deg/min. B. rad/s. C. deg/s. D. rev/s. E. rev/min.
In using a magnet to find north, the term "declination" represents
A) the degree of weakness of the magnetic field. B) the angle above the horizontal of the earth's magnetic field. C) another term for "angle of dip." D) the angle below the horizontal of the earth's magnetic field. E) not given
Approximately when does a third-quarter moon rise?
A) sunset B) noon C) midnight D) sunrise