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Two blocks are free to slide along the frictionless wooden track shown in the figure. The black of mass m1 = 4.92 kg is released from the position shown, at height h = 5.00 m above the flat part of the track. Protruding from its front end is the north pole of a strong magnet, which repels the north pole of an identical magnet embedded in the back of the block of mass m2 = 10.6 kg, initially at rest. The two blocks never touch. Calculate the maximum height to which m1 rises after the elastic collision.
An engineer has designed a machine to produce electricity by using the difference in the temperature of ocean water at different depths. what is the maximum efficiency of this machine
An electric field given by = 7.4· - 4.4(y2 4.7)· pierces a Gaussian cube of edge length 4.0 m, What net charge (in Coulombs) is enclosed by the Gaussian cube
The fuel tank on a car is d = 0.35 m tall. The fuel level in the tank is detected by a L = 0.66 m arm that is free to rotate about a pivot at an upper fuel tank corner. Its sensor end floats at the surface of the fuel as indicated in the diagram, ..
A car of mass 2000 kg rounds a circular turn of radius 10 m. If the road is flat and the coefficient of static frictionbetween the tires and the road is 0.8, how much work is done on the car by friction
Light from a sodium lamp (= 589 ) illuminates two narrow slits. What is the spacing between the two slits
a uniform magnetic field of 0.15 t is directed along the positive x-axis. a positron moving at 5.0 x 106 ms enters the
A solid, horizontal cylinder of mass 9.0 kg and radius 1.30 mrotates with an angular speed of 6.00 rad/s about a fixed verticalaxis through its center. Determine the final angular speed of the system
A boat, which has a speed of v= 12.0 m/s in still water, heads directly across a river which has a current of 7.00 m/s and is d = 480 meter wide. Obtain how far downstream will this boat reach the opposite shore
Find the final velocity of the combined mass after an in elastic collision 500g at 4m/s toward 300g 2 m/s and the change of KE
a steel wire of diameter .8mm and legth of 1 meter is clamped at two points a and b which are apart 1m and in the same horizontal plane. a block is hung from the middle point of the wire such that the middle point sags by 1cm. calculate the mass
One end of a long rod (n=1.5) is formed into a convex surface with a radius of curvature of 6cm. Find the image and object focal lengths, f' and f, and mark the locations of the foci in your to-scale sketch
Two parallel metal rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 122.0 ?. What is the maximum speed of the bar
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