Ans: d. Physical barrier
Raul is attending a workshop, but he is having difficulty hearing the speaker because the people behind him are talking. What type of barrier to effective listening is Raul experiencing?
a. Psychological barrier
b. Nonverbal distraction
c. Grandstanding
d. Physical barrier
Physics & Space Science
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Thanks to interferometry, a properly spaced set of 10-meter radio telescopes can achieve the angular resolution of a single, 100-kilometer radio telescope.
a. Yes, but with much lower sensitivity than a single, 100- kilometer telescope. b. Yes, and the resulting interferometer will have exactly the same properties as a single, 100-kilometer telescope. c. No, interferometry only works over much smaller distances. d. No, the blurring effects of Earth’s atmosphere limit the achievable angular resolution.
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Initially, the light puck is moving west at 4 m/s while the heavy puck is moving south at 2 m/s. The final velocity of the conjoined pucks is
A. West. B. South. C. Southwest. D. Zero. E. Some other direction (explain).
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The electric field lines between a pair of equal and opposite charges are
A) directed from positive to negative. B) more concentrated closer to the charges. C) vectors, with patterns resulting from the inverse-square law. D) all of the above E) none of the above
Physics & Space Science
The essentials of the first law of motion were initially developed by
a. Aristotle. b. Galileo. c. Newton. d. an unknown scientist.
Physics & Space Science