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A bungee cord is stretched between two poles with a force of 370 N. The length of the cord is 33 meters and it has a mass of 6.5 kg. What is the velocity of a wave on this bungee cord?
Two point charges are separated by 25.0cm (see the figure (Figure 1) ). Suppose that q1 = 6.25nC and q2 = 12.0 nC. Discover the magnitude of the net electric field these charges produce at point A. Find the direction of the net electric field these c..
My car engine can deliver a maximum of 112 ft-lbf of torque when running at 3450 rpm. How many horsepower is the engine producing at this same time
in a proton accelerator a moving proton hits a solid target and stops. as a result an electron-positron pair is created
Air is contained in a vertical piston-cylinder assembly such that the piston is in static equilibrium. The atmosphere exerts a pressure of 101 kPa on top of the 0.5-m-diameter piston. Determine the mass of the added weight
A truck can move up a road having a grade of 1.0-ft rise every 50-ft with a speed of 15 mi/h. The resisting force is equal to one twenty-fifth the weight of the truck. If its power output is the same, how fast will the same truck move down the hill? ..
Gas is contained in an 8.2 L vessel at a temperature of 70C and a pressure of 9.2 atm. Find the number of moles of gas in the vessel
A swimmer heads directly across a river, swimming at 1.49 m/s relative to the water. She arrives at a point 42.0 m downstream from the point directly across the river, What is the swimmer's speed relative to the shore
In 4 to 5 billion years, the Sun is expected to enter a red giant phase, in which its outer layers will gradually expand out beyond Earth's present orbit. If the Sun's angular momentum is conserved as it expands, and its mass doesn't change, will its..
A gray kangaroo can bound across a flat stretch of ground with each jump carrying it 9.0m from the takeoff point. What is its horizontal speed
A 120 kg barrel which is initially at rest is rolled down an inclined plane. The friction between the barrel and the surface of the plane is negligible, calculate the barrel's velocity when it reaches the ground level
A small current element at the origin has a length of 2.0 mm and carries a current of 2.0 A in the +z direction. Discover the magnetic field due to the current element (a) on the x axis at x = 3.0 m,(b) on the x axis at x = –6.0m.
A wheel is disconnected from a motor and come to rest from 14,000 rpm because of a 0.90 m·N frictional torque. How many revolutions has the wheel turned before coming to rest
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