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a motor boat haeds due east at 5.0 m/s acorss a river that flows toward the south at 5 m/s. If the river is 125m wide, how longs does it take the boat to cross the river?
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Question: A student standing in a canyon yells "echo," and her voice produces a sound wave of frequency of f = 0.56 kHz. The echo takes t = 3.5s to return to the student. Assume the speed of sound through the atmosphere ...
Question: Suppose the distance from the lens system of the eye (cornea +lens) to the retina is 13 mm. (a) What must the power of the lens be whenlooking at distant objects? D (b) What must the power of the lens be when l ...
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Question: A slab of insulating material of uniform thickness d, lying between -d/2 to +d/2 along the x axis, extends infinitely in the y and z directions. The slab has a uniform charge density Ï. The electric field is z ...
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Question: A sled of mass m is being pulled horizontally by a constant upward force of magnitude F that makes an angle theta with the direction of motion. The coefficient of kinetic friction is mu_k. The average velocity ...
Question: Suppose the free-fall acceleration at some location on earth was exactly 9.8000 m/s^2. What would it be at the top of a 1000 -tall tower at this location? The response must be typed, single spaced, must be in t ...
Question: For this problem, take the distance from the Earth to the Sun to be 1.5 x 10 11 m and the radius of the Earth to be 6.38 x 06m. A) Using the fact that the earth orbits the Sun once per year, calculate the Earth ...
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