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The luxury liner Queen Elizabeth 2 has adiesel-electric powerplant with a maximum power of 84 MW at a cruising speed of 31.0 knots. What forward force is exerted on the ship at this highest attainable speed? (1 knot = 1.852km/h.)
An archer shoots an arrow with a velocity of 45m/s at an angle of 50 degrees with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the least initial speed required to ..
John who is ice skating eastward collides with Mary who is ice skating northward. What was John's initial speed
A load of bricks with mass = 15.6 hangs from one end of a rope that passes over a small, frictionless pulley. What is the magnitude of the upward acceleration
question1a plane leaves the airport in galisteo and flies 170 km at 68deg east of north and after that changes
A box is pushed a distance d along a ramp at a constant speed by a horizontal force, Fa. how much work is done by the horizontal force
An object with a mass of m = 5.5 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.275 m and mass of M = 3.00 kg. compute the magnitude of the acceleration of the object
If she were to use the mattress as a trampoline losing contact with it for part of each cycle. What minimum amplitude of oscillation does she need.
A cord of length 1.5 m is fixed at both ends. Its mass per unit length is 1.1 g/m and the tension is 11 N. What is the frequency of the fundamental oscillation
An electron accelerated from rest through the voltage of 500V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 17cm, what is the magnitude of magnetic field.
An unstable atomic nucleus of mass 1.62x^10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.02x10^-27 kg, moves in the y direction with a speed of 6.00x10^6 m/s. Another particle, of mass 8.44x10^-27 kg,..
The electric field at the surface of a charged, solid, coppersphere with radius 0.210 m is3380 N/C directed toward the center ofthe sphere. What is the potential at the center of the sphere, ifwe take the potential to be zero infinitely far from thes..
What are direction and magnitude of total velocity
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