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1. Water exits a 1-cm-diameter outlet of a faucet. Estimate the maximum speed that would result in a laminar flow if the water temperature is
(a) 20-C, (b) 50-C, and (c) 100-C. Assume Re ¼ 2000. 2. Air flows over and parallel to a flat plate at 2 m=s. How long is the laminar portion of the boundary layer if the air temperature is
(a) 30-C, (b) 70-C, and (c) 200-C. Assume a high-fluctuation level on a smooth rigid plate.
An electron is located on a pinpoint having a diameter of 2.5 um. What is the minimum uncertainty in the speed of the electron
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.60 m/s at an angle of 25.0° below the horizontal. Find the height from which the ball was thrown
a decorative light fixture in an elevator consists of a 2.0 kg light suspended by a cable from the ceiling of the
a 640 g hollow ball 28 cm in diameter is suspended by a wire and is undergoing torsional oscillations at a frequency of
You are standing still, just to the side of a set of train trackers. A train passes by, moving at 25.0 m/s just as it passes by, it blows its whistle, Find the frequency of the sound you hear from the whistle
Suppose a satellite is in a circular orbit 5.175 Earth radii above the surface of the Earth, By how much does it have to increase its speed
Direction of the surface winds What is the expected composition
A hollow, conducting sphere with an outer radius of 0.240 m and an inner radius of 0.197m has a uniform surface charge density of +6.35×106 C/m2. Calculate the strength of the electric field just outside the sphere
When viewed by an observer on the Earth, light from a distant galaxy is Doppler shifted to the red such that the ratio of the unshifted frequency to the observed frequency is 1.8
A motor boat haeds due east at 5 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.
A train is moving east on a straight track with a speed of 12.9 m/s. What is the speed of the raindrops with respect to the ground
One of James Bond's adversaries is standing on a frozen lake;there is no friction between his feet and the icewhat is themagnitude of his horizontal recoil velocity
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