At the same moment, one rock is dropped and one is thrown downward with an initial velocity of 29m/s from the top of a building that is 300m tall. How much earlier does the thrown rock strike the ground? Neglect air resistance
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2.4 s
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An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466 . If a ray of light is incident on the air-to-oil surface at an angle of 40.0° with the normal, what is the incident angle at the oil-to-water surface?
a. 24.2° c. 26.0° b. 37.0° d. 18.1°
According to the theory of seafloor spreading, molten rock is rising up along
A) the mid-ocean ridges. B) trenches that border continental margins. C) islands surrounding the Pacific volcanic rim. D) areas of sinking seafloor.
Rank the following events in the order that corresponds to the formation of a planetary system.
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We can describe the position of an object in our local sky by stating its
A) altitude and meridian. B) altitude and direction. C) latitude and direction. D) latitude and longitude. E) meridian and longitude.