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A series of cold-rolling operations are used to reduce the thickness of a metal plate from 40 mm to 15 mm in a reversing two high mill. Roll diameter = 500 mm, and coefficient of friction between rolls and work = 0.15. The specification is that the draft is equal on each pass. Determine the (a) minimum number of passes required and (b) draft for each pass
how much work is done by the electric field as a third charge q3 = +2.19 nC is moved from point a to point b. (q1 = +9.41 nC, q2 = -9.41 nC)
an airplane undergoes the following displacements first it flies 87 km in a direction 40 east of north. next it flies
To fit a contact lens to a patient's eye, a keratometer can be usedto measure the curvature of the cornea-the front surface of theeye. Determine the radius of curvature of the cornea
Find the horizontal component of the reaction force exerted by the hinge on the beam FRH. Find the vertical component of the reaction exerted by the hinge on the beam FRV.
The two plates of a capacitor hold +2510 uC and -2510 uC of charge, respectively, evaluate the capacitance
Two identical rectangular rods of metal are welded end to end witha temperature of T1 = 0o C on the left sideand a temperature of T2 = 100o Con the rightside. In 2.0 minutes, 10J is conducted at a constant rate from theright side to the left side.
A transformer with 120. turns in its secondary supplies 12. volts at 220. ma to a toy train. The primary is connected across a 120. V wall outlet. What power is delivered by the wall outlet
A 71.0 kilogram boulder is placed on a 2.00 meter long board, at a point that is 1.40 meter from one end. find what forces does Cliff applies to the board
You are standing still, just to the side of a set of train trackers. A train passes by, moving at 25.0 m/s just as it passes by, it blows its whistle, Find the frequency of the sound you hear from the whistle
The mass of a mass and spring system is displaced 10 cm from its equilibrium position and released. A frequency of 4.0 Hz is observed. What frequency would be observed if the mass had been displaced with only 4.0 cm and then released?
A physical pendulum is constructed using a 2.35kg object having a moment of inertia of 27 kg-m2 aboutits center of mass. The rotation (suspension) point is 850.3 cmfrom the center of mass. What is the period of this physical pendulum?
Assuming that the upper surface of the ice sheet is at -15?C and the bottom surface is at 0 ?C, calculate the time it will take to form an ice sheet 30cm thick
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