A point source of light is positioned 20.0 m below the surface of a lake. What is the diameter of the largest circle on the surface of the water through which light can emerge into the air? The index of refraction of water is 1.33
What will be an ideal response?
45.6 m
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In the development of a terrestrial planet, the stage of ____ occurred when molten rock flowed through fissures and filled deep basins
a. differentiation b. cratering c. glaciation d. accretion e. flooding
A convenient method to write very large numbers is to use scientific notation
a. True b. False Indicate whether the statement is true or false
Lenz's Law is a consequence of the law of conservation of
A) mass. B) momentum. C) electric field. D) energy. E) charge.
At what temperature would the root-mean-square speed (thermal speed) of oxygen molecules be 13.0 m/s? Assume that oxygen approximates an ideal gas. The mass of one O2 molecule is 5.312 × 10-26 kg. The Boltzmann constant is 1.38 × 10-23 J/K
A) 0.217 K B) 1800 K C) 5410 K D) 0.0666 K