The Heisenberg uncertainty principle places restriction on the precision of simultaneously measuring both position and momentum. This principle can also be applied to the simultaneous measurement of two other variables, which are:
a. mass and charge.
c. force and color.
b. torque and frequency.
d. energy and time interval.
D
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Consider an electron in a hydrogen atom. How does the wavelength ? of an energy eigen function (as measured around the circular band) depend on the energy E associated with that eigen function?
A. ? ? ?E?
B. ? ?
C. ? is independent of E.
D. ? ? 
E. ? ? 1/?E?
Which of the following is not evidence supporting the idea that our Moon formed as a result of a giant impact?
A) The Pacific Ocean appears to be a large crater—probably the one made by the giant impact. B) The Moon has a much smaller proportion of easily vaporized materials than Earth. C) The Moon's average density suggests it is made of rock much more like that of the Earth's outer layers than that of the Earth as a whole. D) Computer simulations show that the Moon could really have formed in this way.
How is it that absorption and reemission of radiation by carbon dioxide molecules can cause trapping of infrared radiation in Earth's atmosphere? Explain
What will be an ideal response?
An astronomical telescope is made with lenses of focal lengths 80.0 and 2.00 cm. What is the barrel length on this telescope?
A. 80.0 cm B. 82.0 cm C. 78.0 cm D. 105 cm E. 127 cm