A nearsighted person has a near point of 12 cm and a far point of 17 cm
If the corrective lens is 2.0 cm from his eye, (a) what lens power will enable this person to see distant objects clearly, and (b) what then will be the new near point of his eye?
(a) -6.7 diopters (b) 30 cm in front of the lens
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Imagine the much more massive Jupiter were to switch places with the less massive Mercury. Which of the following would accurately describe the outcome?
A. Jupiter would orbit the Sun in less time than it did before. B. Mercury would orbit the Sun in less time than it did before. C. The orbital time for each of the planets would not change. D. Jupiter would orbit the sun in more time than it did before.
The standard exam page is 8.50 inches by 11.0 inches. Its area in cm2 is
a. 19.5. b. 36.8. c. 93.5. d. 237. e. 603.
When an acid reacts with a carbonate or hydrogen carbonate, the products are water, carbon dioxide, and ______________
Fill in the blank(s) with correct word
The radiation emitted from a small hole in a furnace is
a. ultraviolet b. infrared c. x ray d. microwave e. blackbody