Briefly state the uncertainty principle
What will be an ideal response?
The more we know about where a particle is located, the less we can know about its momentum, and the more we know about its momentum, the less we can know about its position.
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Arvin the Ant travels 35 cm eastward, then 25 cm northward, and finally 10 cm westward. What is Arvin's direction of displacement with respect to his original position?
A 3.000 kg ball is pitched with a kinetic energy of 20.00 Joules. Then the momentum of the ball is
A. 7.500 kg m/s. B. 8.350 kg m/s. C. 9.450 kg m/s. D. 10.95 kg m/s. E. 12.50 kg m/s.
Comets are largely made out of
A) rock and ice. B) hydrogen gas. C) rock. D) hydrogen compounds. E) metal.
Which of the following are predictions of inflation theories?
A. The cosmic microwave background must be uniform. B. The Universe expanded rapidly over a short period of time. C. The smaller initial size of the Universe allowed thorough mixing. D. All of these choices are correct.