A railroad whistle is sounded an echo is heard 50 seconds
A railroad whistle is sounded. An echo is heard 5.0 seconds later. If the speed of sound is 343m/s, how far away is the reflecting surface?
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a buffer is made from benzoic acid and sodium benzoate how many grams of the acid would you have to mix with 144 g of
carotenoids present in all organisms capable of photosynthesis extend the range of light absorbed by the organism they
the block in the figure has a mass of 15kg the top angle the incline is 37 degrees and there is no friction on the
two canoes are 10 m apart on a lake each bobs up and down with a period of 40 seconds when one canoe is at its highest
a railroad whistle is sounded an echo is heard 50 seconds later if the speed of sound is 343ms how far away is the
a coin is placed near one edge of a book lying on a table and that edge do the book is lifted until the coin now slips
a rock is thrown directly upward 563 meters off a roof and misses the roof on the way backnbsp it strikes the ground 4
at amusement parks there is a popular ride where the floor of a rotating cylindrical room falls away leaving the backs
a homogeneous bar of length l can rotate on a horizontal frictionless plane around a vertical axis passing during one
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