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A single pass rolling operation reduces a 20-mm-thick plate to 17.5 mm. The starting plate is 200 mm wide. Roll radius = 250 mm and rotational speed = 45 rev/min. The work metal has a strength coefficient = 400 MPa and a strain hardening exponent = 0.17. Determine the (a) roll force, (b) roll torque, and (c) power required for this operation.
A convex mirror has a focal length of -48.0 cm. A 12.0-cm-tall object is located 36.0 cm in front of this mirror. Using a ray diagram drawn to scale, determine the location of the image. Note that the mirror must be drawn to scale
Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 40.1° with the axis of the polarizer. What fraction of the original light is absorbed by the analyzer
You drive your 1,465-kg car at a constant speed of 25 mph down a ramp that has a grade of 12 %. Define positive direction in the forward direction
A hockey puck with mass 0.160 kg is at rest on the horizontal, frictionless surface of a rink. A player applies a force of 0.250 N to the puck, What are the position and speed of the puck at the end of that time
Two horses are pulling a barge with mass 1.87 103 kg along a canal, Find the initial acceleration of the barge
The space shuttle is in a 250km -high circular orbit. It needs to reach a 700km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
What is the surface wind direction and wind speed (in knots) in North Dakota on October 15, 2015? What is the upper atmosphere wind direction and wind speed (in knots) over North Dakota on October 15, 2015? What is the surface wind direction and wi..
calculate the energy released by fission of 1 g of uranium-235 in mwd mega watt day assuming that the energy per
If you charge a pocket comb by rubbing it with a silk scarf, how can you determine if the comb is positively or negatively charged.
Draw a free body diagram of all the forces acting on the ball during its motion, prior to undergoing pure rolling.
a 2.0-kg block slides on a frictionless 15 degree inclined plane. a force acting parallel to the incline is applied to
Light hits the surface of water at an incident angle of35° with respect to the normal line. What is the angle between the reflected ray and the refracted ray?
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