An object in a closed orbit under the influence of an attractive force that follows the inverse square law must behave a(n) _______________ path
Fill in the blank(s) with correct word
elliptical
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The age of the solar system can be established by radiometric dating of
A) the oldest Earth rocks. B) the oldest rocks on the Moon. C) the oldest meteorites. D) the atmosphere of Mars. E) the oldest rocks on Jupiter's moon Io.
One of the fundamental ideas in the development of quantum mechanics was that
A. no two particles can have the same energy. B. all particles have wave properties. C. electrons and protons are the only particles D. all particles are formed by the interaction of electromagnetic waves. with mass.
If a 1H nucleus, a 2H nucleus, and a 3H nucleus all had the same momentum, which one has the greatest de Broglie wavelength?
a. 1H b. 2H c. 3H d. All three have the same de Broglie wavelength.
The temperature is observed to decrease from
to 
during the evening of a very hot day. What is the relative change in the speed of sound over this time interval?
A. -15% B. -28% C. -1.5% D. -3%