Suppose the farthest distance a person can see without visual aid is 53 cm.
(a) what is the f...
Suppose the farthest distance a person can see without visual aid is 53 cm.
(a) what is the focal length of the corrective lens that will allow the person to see very far away?
(b) is the lens converging or diverging?
(c) the power p of a lens (in diopters) is equal to 1/f, where f is in meters. what is p for the lens?
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Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s
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