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To measure the speed of light, Fizeau used a rotating disk with equally spaced holes through which light could pass. Light was directed at the rotating disk, passed through 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 holes are placed every 0.500 degree and the mirror is 20.0 km away.nif the speed of light is 3.00 x 10^8 m/s, at what angular speed of the disk will the returning light pass through the next hole?
a cube of ice is taken from the freezer at -8.5 and placed in a 92 aluminum calorimeter filled with 314of water at room
A 4.5 W flashlight bulb draws 750 mA. At what voltage does it operate
A rod 11.0 cm long is uniformly charged and has a total charge of -21.5 µC. Determine the magnitude of the electric field along the axis of the rod
Two identical spacecraft are to be accelerated by rockets. The first rocket fires with a force 4 times as large as that of the second rocket. The acceleration of the first rocket is how many times as vast as the acceleration of the second rocket.
A 70 kg person stands on one foot. If his foot is approximately a(n) 8.0-cm by 30-cm rectangle, what is the average pressure beneath his foot
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 56° C. What is the temperature coefficient of resistivity
A concrete slab is 9.7 cm thick and has an area of 4.6 m^2. What minimum power must be supplied to the coils to maintain a temperature difference of 17.3 Degrees C between the bottom of the slab and its surface
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. The sound level of this creature has been measured as high as 100 dB. (a) Calculate the intensity of the sound wave ..
A total charge of Q is deposited on a solid metal sphere of radius R. This charge distributes itself uniformly over the surface, yielding an electrostatic field E~ perpendicular =(sigma / e0) n^ just outside the sphere and E~ = 0 everywhere insid..
An antiaircraft shell is fired vertically upward with an initial velocity of 200m/s. compute the maximum height of the shell
q1. a fan at a rock concert is 30 m from the stage where the sound intensity level is 110 db. her eardrums have a
An incompressible fluid is flowing through a pipe with a constriction. The pipe is on an incline with an angle of 30.0 degrees. What is the pressure in the narrow section of the pipe
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