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A woman on a bridge 107 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. The stone is released when the raft has 9.23 m more to travel before passing under the bridge. The stone hits the water 4.36 m in front of the raft. Find the speed of the raft.
A radar system can measure the time delay between the transmitted and reflected wave pulses from a distant airplane with an accuracy of 1.02 picoseconds. What is the accuracy in the calculated distance to the plane
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hour to go around the earth, What is the force of gravity on this satellite
The aircraft carrier John F. Kennedy has mass 7.4 107 kg. When its engines are developing their full power of 280,000 hp, the John F. what is the magnitude of the force of water resistance
What is the new frequency of the string that was tightened. find the magnitude of the net force acting on the car during this time.
A mass of 0.4 kg, is connected to a spring with a spring constant of 100 N/m, What is the maximum speed of the mass and What is the energy stored in the mass/spring system when its speed is half the maximum value
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. obtain the speed of a satellite in a geosynchronous orbit
A small airplane flies with a speed relative to the ground (ground speed) of 219.0 km/h in a direction 20.0 degrees to the east of north. what is the speed of the wind
A particle with mass 2.30 g and charge +10.0 uC enters through a small hole in a metal plate with a speed of 8.50 m/s, How far will the particle travel, delta x, before it hits the plate
A block of wood (density=.50 grams/cm^3) is floating in oil (density=0.75 grams/cm^3). the mass of the wood is 1500 grams. Determine the volume of the oil displaced
A plane flies from base camp to Lake A, 300 km away in the direction 36.9° south of east. After dropping off supplies it flies to Lake B, which is 260km at 30.0° west of north from Lake A. find out the distance and direction from Lake B to the bas..
The magnetic field of a cylindrical magnet that has a pole-face diameter of 3.3 cm can be varied sinusoidally between 29.6 T, find the amplitude of the electric field induced by the variation
An airplane maintains a speed of 573 km/h relative to the air it is flying through as it makes a trip to a city 689 km away to the north. What time interval is required for the trip if the plane flies through a headwind blowing at 38.1 km/h toward t..
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