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A fire helicopter carries a 649 kg bucket of water at the end of a 18.7 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, the cable makes an angle of 31.5o with respect to the vertical. Determine the force of air resistance on the bucket.
You have a solid conducting sphere (radius A, net charge -2Q) surrounded by a conducting spherical shell (inner radius B, outer radius C, net charge +3Q). What is the electric field everywhere
Future space stations will create an artificial gravity by rotating. What rotation period will provide "normal" gravity
Two coils of wire are placed close together. Initially, a current of 4.70 A exists in one of the coils, but there is no current in the other. What is the mutual inductance of the two-coil system
Two blocks on a frictionless table, A and B, are connected by a massless string. What is the ratio (ma/mb) of the blocks masses
A car moving at 78mi/hr approaches a yield sign 70m ahead. The driver slows the car with a constant acceleration of -4.5m/s2 by hitting the brakes. How long does it take the car to reach the yield sign
What is the magnetic flux passing through Ring 2 due to A and derive an expression for the induced emf in Ring 2, 62? How much current flows in Ring 2 and in which direction?
A motorist drives along a straight road at a constant speed of 22.0 m/s. Just as she passes a parked motorcycle police officer, Find the speed of the officer as he overtakes the motorist
A Federation star ship (2.0×10^6 kg) uses its tractor beam to pull a shuttlecraft (2.0×10^4 kg) aboard from a distance of 10.0 km away. The tractor beam exerts the constant force of 2.50 X 10^4N on the shuttlecraft. Both spacecraft are initially a..
What is an average velocity of the rock
If a four-engine jet accelerates down the runway at 2 m/s2 and one of the jet engines fails, explain how much acceleration will the other three produce?
For a real train the friction between the car and the track can be described by a friction coefficient, μ. Find out this coefficient assuming that the time it takes for the car to come to rest is 3 s.
At the same time, car 2 is 1.2 east of mile marker 0 travelling at 30 due wests. Car 1 is speeding up with an acceleration of magnitude 0.20, and car 2 is slowing down with an acceleration of magnitude 0.60.
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