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To measure the speed of light, Fizeau used a rotating disk with equally spaced holes during which light could pass. Light was directed at the rotating disk, passed during one of the holes, bounced from a distant mirror, and then the angular speed of the wheel was adjusted until the returning beam of light passed through the next hole in the disk. In one such experiment, the wheel is spun at 1000 rpm and the mirror is 18 km away. If the speed of light is 3.00 x 108 m/s, what is the needed angular spacing among the holes so the returning light will pass during the next hole?
a physics student swings a pail of water in a vertical circle 1.0 m in radius at a constant speed. if the water is not
A 15.9g bullet traveling horizontally at 871m/spasses through a tank containing 14.5kg of water and emerges with a speed of 537m/s
big ben the parliament building tower clock in london has hour and minute hands with lengths of 2.70 m and 4.50 m and
A buzzer generates a sound by vibrating with a frequency of 440 Hz in air. If this buzzer is placed under water, What frequency would a fish hear
An airplane with a speed of 89.1 m/s is climbing upward at an angle of 31.5 ° with respect to the horizontal. Relative to the ground, determine the angle of the velocity vector of the package just before impact
a long horizontal wire carries a current of 48 amps. A second wire, made of 2.5 mm diameter copper wire and parallel to the first, is kept in suspension magnetically 15 cm below. Determine the magnitude and direction of the current in the lower wi..
In 0.675 s, a 6.80-kg block is pulled through a distance of 4.10 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
What is the maximum speed with which a 1350kg car can round a turn of radius 71m on a flat road if coefficient of static friction between tires and road is 0.40.
A uniform magnetic field of magnitude B= 1.2 teslas is directed toward the bottom of the page in the -y direction as shown above. At time t=0, a proton p in field is moving in the plane of the page with a speed v0= 4 x 10^7 meters per second in a ..
If the string is 9.50 m long, has a mass of 55g and is pulled taut with a tension of 9.5 N, how much time does it take for a wave to travel from one end of the string to other.
If 100 grams of water (specific heat of 1.00 cal/gm deg) at 5degrees Celsius is added to 500 grams of a substance with a precise heat of .25 cal/gm deg at 20 degrees Celsius in an insulated container...what is the final temperature of the mixture?
a rocket in a fireworks display explodes high in the air. the sound spreads out uniformly in all directions. the
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