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A 2.4 mW laser beam has its electric field vertical. If it passes through a polarizer with its transmission axis at 30 degrees to the vertical, what's the power of the transmitted beam? Express your answer to two significant figures and include the appropriate units.
City lies directly west of city . When there is no wind, an airliner makes the 6130 round-trip flight between the two cities in 6.50 of flying time while traveling at the same speed in both directions. How fast is the wind blowing
A 30 kg launching machine fires a 250 gram projectile horizontally at 100 m/s. This causes the machine to slide backward 1.122 meters before coming to a rest. What surfaces are likely to cause this friction
Two organ pipes, open at one end but closed at the other, are each 1.27m long. One is now lengthened by 2.00cm. Find the frequency of the beat they produce when playing together in their fundamental.
a 110 g copper calorimeter cup contains 205 cm3 of water and 50 g of ice all in thermal equilibrium. a 215 g piece of
A 60g ball of clay is thrown horizontally at 10m/s toward a 1.8kg block sitting at rest on a frictionless hi surface. The clay hits and sticks to the block. What impulse does the block exert on the clay
A hydraulic system uses a large piston with a 1-m radius and a small piston with a 0.10-m radius. If the smaller piston is displaced two meters then how far is the larger one displaced
A planet orbits a star once every 3.44 multiply.gif 107 s in a nearly circular orbit of radius 1.46 multiply.gif 1011 m. determine the tangential speed of the planet
The femur is a bone in the leg whose minimum cross-sectional area is about 4.3 x 10-4 m2. Find the maximum stress that this bone can withstand
A 5 oz baseball is thrown in the air so that when it is at its highest point, it is traveling sideways at 50.0 ft/sec. what will be the speed of the baseball when it drops back down to the level of the field
A thin circular sheet of glass of diameter 3 meters is rubbed with a cloth on one surface and becomes charged uniformly. find the total excess charge on the surface of the glass disk
Earth's radius is 6384 km. How many rotations per day would earth have to spin such that a person standing on the equator would weigh nothing? what is the person's tangential speed
a horizontal wire of length 0.58 m carrying a current of 2.5 a is placed in a uniform external magnetic field. when the
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