shown. Inside the glass, the laser beam will take path nair = 1.000, nglass = 1.50
A. 1
B. 2
C. 3
C. 3
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Which of the following is a problem inherent in all large radio telescopes?
A) They are badly affected by poor seeing and atmospheric turbulence. B) The lightest breeze shakes them, making the observations blurry. C) Their waves are blocked by water vapor, so they must be located in deserts. D) Radio waves have long wavelengths, so radio telescopes have poor resolution. E) The dust clouds in the Milky Way block almost all wavelengths except light.
Fusion depends upon the ________ nuclear force getting the protons to stick together
Fill in the blank(s) with correct word
A singer is farsighted and cannot see objects clearly that are closer than 80.0 cm from his unaided eye. What is the refractive power of the contact lenses that will move his near point to a distance of 25.0 cm from his eye?
A) 2.75 diopters B) -2.75 diopters C) -4.72 diopters D) 4.72 diopters E) 7.00 diopters
A boat is floating in a small pond. The boat then sinks resting on the bottom, but the pond is so shallow that part of the boat is not submerged. What happens to the level of the pond?
a. It increases. b. It decreases. c. It stays the same. d. In some cases it would decrease, in others it would stay the same. e. In some cases it would increase, in others it would stay the same.