The lunar _______________ are saturated with craters
Fill in the blank(s) with correct word
highlands
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When light goes through two or more separated lenses,
a. the image distance of the first lens (the one nearest the object) will be positive. b. the final image can be inverted. c. the image distance of the first lens will be the object distance for the second lens. d. the object distance for the second lens will be negative.
Resolution: Assuming a pupil diameter of 3 mm, what is the angular resolution of the human eye for light at the middle of the visible spectrum (550 nm)?
A. 0.8° B. 0.2° C. 2 mrad D. 0.01° E. 2°
Uniform Electric Fields: A space probe approaches a planet, taking measurements as it goes. If it detects a potential difference of 6000 MV between the altitudes of 253,000 km and 276,000 km above the planet's surface, what is the approximate electric field strength produced by the planet at 264,500 km above the surface? Assume the electric field strength is approximately constant at these altitudes.
A. 261 N/C B. 0.261 N/C C. 561 N/C D. 493 ?N/C
According to Einstein's equation, E = mc2, which of the following statements is true?
A) Mass can be turned into energy, but energy cannot be turned back into mass. B) It takes a large amount of mass to produce a small amount of energy. C) A small amount of mass can be turned into a large amount of energy. D) Mass can be turned into energy if it is accelerated to the speed of light. E) One kilogram of mass represents 1 joule of energy.