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The drain plug on a car's engine has tightened to a torque 25 m ? N . If a 0.15-m-long wrench is used to change the oil, what is the minimum force needed to loosen the plug?
A boy whirls a stone in a horizontal circle of radius 1.7 m and at height 2.2 m above ground level. The string breaks, and the stone flies horizontally and strikes the ground after traveling a horizontal distance of 10 m. What is the magnitude of the..
A grating that has 3400 slits per cm produces a third-order fringe at a 24.0? angle. What wavelength of light is being used
A skateboarder, starting from rest, rolls down a 13.7-m ramp. When she arrives at the bottom of the ramp her speed is 6.28 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 33.3 ° with respec..
A high-voltage transmission line with a resistance of 0.33 omegacap.gif/km carries a current of 1040 A. What is the power loss due to resistance in the line
A computer to be used in a satellite must be able to withstand accelerations of up to 25 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. In this process a filament (a piece of metal in a vacuum) is heated by the application of electrical current
A spring is compressed by .02 m ad launches a block up an incline (ignore friction). what is the maximum distance will it travel
Two skaters, A and B, of equal mass are moving in clockwise uniform circular motion on the ice. What is the ratio of speeds of the skaters
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.43 rad/s2. It accelerates for 31.5 s, then maintains a constant angular velocity
A proton moves in a circular path perpendicular to a 1.19 T magnetic field. Calculate the energy of the proton in eV
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
A ball is thrown horizontally from a cliff of height H at the very same moment a truck is passing by the base of the cliff at a constant speed Vtruck. What is the ball's velocity (magnitude and direction) when it hits the truck
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