Heating that uses masonry at higher temperatures to warm indoors is more effective than circulating water in a system of hot water/steam radiators
What will be an ideal response?
This appears to be the case. Human beings react in comfort terms to the radiative
properties of a room. A room surrounded by radiating walls seems warmer than one
warmed to the same temperature by other means.
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The two outer jovian planets appear bluish in color because
A) methane gas in their atmospheres absorbs red light well. B) from their distance, the Sun would appear hotter and bluer than from Earth. C) ammonia absorbs blue light well. D) dust motes in their atmospheres scatter blue well, just as in our own blue sky. E) hydrogen and helium are both blue in large concentrations.
Quantum uncertainties are the source of
A) the unpredictability of radioactive decay. B) the unpredictability of games of chance such as flipping coins. C) Both of the above. D) None of the above.
The Very Long Baseline Array (VLBA)
a. is the highest resolution optical telescope ever built. b. is located in Arecibo, Puerto Rico. c. is a matched pair of 8 m telescopes, one of which is in Chile and the other in Hawaii. d. is an air-borne infrared telescope. e. is a set of radio telescopes linked together electronically to provide very high resolution.
An astronaut has landed on an asteroid and conducts an experiment to determine the acceleration of gravity on that asteroid. She uses a pendulum that has a period of oscillation of 2.00 s on Earth and finds that on the asteroid the period is 11.3 s
What is the acceleration of gravity on that asteroid? A) 0.307 m/s2 B) 1.66 m/s2 C) 1.74 m/s2 D) 5.51 m/s2 E) 0.0544 m/s2