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A wall clock has a minute hand with a length of 0.51 m and an hour hand with a length of 0.28 m. Take the center of the clock as the origin, and use a Cartesian coordinate system with the positive x axis pointing to 3 o'clock and the positive y axis pointing to 12 o'clock. Write the vector that describes the displacement of a fly if it quickly goes from the tip of the minute hand to the tip of the hour hand at 3:00 P.M. (Let represents the displacement of the fly.)
A magnetic field of 3 Tesla is oriented into the page. A 10 cm long conducting bar is pulled to the right at a constant speed of 3.4 m/s. What is the magnitude of the current in the bar
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the astronaut's orbital speed
The magnetic flux that passes through one turn of a 18-turn coil of wire changes to 1.0 Wb from 9.0 Wb in a time of 0.092 s. What is the resistance of the wire
When 22.1 J was added as heat to a particular ideal gas, the volume of the gas changed from 37 cm3 to 60 cm3 while the pressure remained constant at 1.2 atm. By how much did the internal energy of the gas change
A 2.30 cm diameter tungsten sphere is heated to a temperature of 2000 degree C. At this temperature tungsten radiates only 30% of the energy radiated by a blackbody of the same size and temperature.
Two lightbulbs have cylindrical filaments much greater in length than in diameter. The evacuated bulbs are identical except that one operates at a filament temperature of 2 195°C and the other operates at 2 085°C. Find the ratio of the power emitt..
The longest pipe in a certain organ is 2.70 m long. What is the lowest frequency the organ will produce if the pipe is open at both ends
A boat has a mass of 6800 kg. Its engines generate a drive force of 4000 N, find the magnitude and direction of the boat's acceleration
if a string vibrating at 42 hz has a standing wave with three antinodes at what frequency will it have a standing wave
you are given three resistors each of 10 kq and a 9-v battery whose negative terminal is connected to ground. witha
A rope with mass mr is attached to a block with massmb. The block rests on a frictionless horizontal surface. The rope does not stretch. The free end of the rope ispulled to the right with a horizontal force F.
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.90×10^6 N, one at an angle 17.0 degrees west of north, What is the total work done by the two tugboats on the supertanker
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