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A lens appears greenish yellow (λ = 570 nm is strongest) when white light reflects from it. What minimum thickness of coating (n = 1.33) do you consider is used on such a glass (n =1.52) lens? Why?
A 40.0 kg box initially at rest is pushed 4.05 m along a rough, horizontal floor with a constant applied horizontal force of 145 N. find the work done by the applied force
the copper wire in a typical residential building has a cross-sectional area of 3.31 x 10-6 m2. if it carries a current
A stable and highly soluble pollutant is dumped into a lake at the rate of 0.19 tonnes per day. The lake volume is 2E7 m3 and the average water flow-through rate is 8E4 m3 per day
A car rounds a circle of radius 180 m , going at 14.5 m/s. What's the car's acceleration if its speed is constant. Compute the new acceleration if the speed is increasing at a rate of 2.4 m/s^2
A cowboy at a dude ranch fills a horse trough that is 1.5 m long, 60 cm wide and 40 cm deep. He uses a 2.0cmdiameter hose from which water emerges at 1.5m/s. How long does it take him to fill the trough.
A rectangular loop of wire of dimensions 12 cm × 25 cm faces a long straight wire. The two long sides of the loop are parallel to the wire, What translational force does the straight wire exert on the loop
assume that friction is so small that it can be ignored. a force toward the right of constant magnitude is applied to
at the top of a hill with slope angle 25 degrees a snow sled is moving at 5 ms. the sled travels 30 m down the hill
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 5.45 m/s2. If the car's initial speed is 33 m/s, how long does it takes to stop and how far does it travel, starting ..
An engineer is given the job of designing the water system for atall building. He decides to locate the pumps at ground level, what must the pressure be at pump level
a load of 100lbs is applied to the lower end of a steel rod 3 ftlong and .20in in diameter. how much will the rod stretch
A 2.93-kg model rocket is launched vertically upward with sufficient initial speed to reach a height of 3.71·102 m, even though air resistance (a nonconservative force) performs -6.11·102 J of work on the rocket.
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