If an x-ray fluorescence spectrometer uses diffraction by a crystal to analyze the spectrum from a sample, this is called _________dispersion.
Fill in the blank(s) with the appropriate word(s).
wavelength
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A 7.0-kg rock is subject to a variable force given by the equation
F(x) = 6.0 N - (2.0 N/m)x + (6.0 N/m2)x2 If the rock initially is at rest at the origin, find its speed when it has moved 9.0 m. What will be an ideal response?
A ______________________ universe is Sun centered
Fill in the blank(s) with correct word
The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is consistent with
A) momentum conservation. B) energy conservation. C) Planck's constant. D) none of the above
A book is given a brief shove along a table top and released so that it slides a short distance and comes to rest. According to Aristotle, it stopped because
A) the ether slows it down to a stop. B) its natural motion is to come to rest. C) of its inertia. D) of gravity. E) of friction.