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Suppose the water at the top of Niagara Falls has a horizontal speed of 4.83 m/s just before it cascades over the edge of the falls. At what vertical distance below the edge does the velocity vector of the water point downward at a 70.2 ° angle below the horizontal?
A force vector points at angle of 47 degrees above the +x axis. It has a y component of 287 Newton's. Find the magnitude of the force vector
A long solenoid of r =1cm and lnght l=1m is inserted into another long solenoid of radius r=3cm, Find the mutual inductance of the two solenoids
A coil with 41 turns of wire is wrapped on a frame with a square cross-section 1.85 cm on a side. Find the magnitude of the induced current in the coil while the field is changing
A horizontal uniform bar of mass 2.9kg and length 3.0 m is hung horizontally on two vertical strings. String 1 is attached to the end of the bar, and string 2 is attached the distance 0.74 m from the other end.
So you would use the equation ?F=ILxB?? where the x is the cross product. Plugging in current, length, and current field strength.
A 768 kg car moving at 27 m/s brakes to a stop. The brakes contain about 16 kg of iron that absorb the energy. What is increase in temperature of the brakes
A ball is thrown straight upward in the air at a speed of 18.0 m/s, What is the maximum height the ball will reach
An 87.6 g lead ball is dropped from rest from a height of 5.60 m. The collision between the ball and the ground is totally inelastic. Assuming all the ball's kinetic energy goes into heating the ball, find its change in temperature.
A lunar lander is making its descent to Moon Base I. The lander descends slowly under the retro-thrust of its descent engine. What is the speed of the lander
How do people take advantage of thermal expansion for practical purposes? How can thermal expansion cause problems for people?
An electron and a positron each have a mass of9.11 10-31 kg. They collide and both vanish, with onlyelectromagnetic radiation appearing after the collision. determine the energy of the electro magnetic radiation
Stretching DNA. With its double-helix structure, DNA is coiled like a spring. What's the DNA's spring constant
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