work is placed on the belts of cast link conveyor
furnaces by means
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Factories often use machines, like conveyor belts, to move objects to different places inside the building. In one factory, 7.9 kg boxes are dropped from a height of 1.5 m onto one end of a 7.7 m long conveyor belt without bouncing. The speed of the belt is 1.3 m/s. The coefficient of friction between the box and the belt is 0.4. From the time the box is released, how long does it take for the box to reach the...
Drop suitcase on conveyor belt. a) A stationary suitcase is placed on a moving conveyor belt. Is the friction static or kinetic? b) The belt is moving to the right. Thus, relative to the belt, the suitcase is moving to the left, thus there is a force on the suitcase to the right. The suitcase accelerates to the right until it reaches the speed of the belt. Is the work that friction does on the suitcase positive, negative, or zero?...
Machines A and B make components, which are then placed on a conveyor belt. Of those made by machine A, 93% are acceptable. Of those made by machine B, 95% are acceptable. Machine A makes 60% of the components and machine B makes the rest. Find the probability that a component selected at random from the conveyor belt is a) made by machine A b) made by machine A and acceptable c) made by machine B and acceptable d) made...
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3) Test the claim that seat belts and death are independent wearing Died survived (X=0.01) Wear Seat belt 10 50 Don't wear 20 30 seat belts
3. A work station is to be located 3 m from a conveyor belt generating a sound power of 0.004 W, 4 m from a machine with 0.005 W sound power, and 6 m from a machine with 0.009 W sound power. Calculate: (a) the noise level at the work station if the sources rest on a hard surface but there are no sound reflections from walls or ceilings (b) the noise level at a work station 1m closer to...
6. For the cast iron link shown, the largest allowable stresses are 30 MPa in tension and 120 MPa in compression. Determine (a) the largest force P which can be applied, (b) the location of the neutral axis relative to point B. 90 mm A 20 mm P ID P' 40 mm 10 mm B B 10 mm 30 mm Section a-a
Four 5.8-kg packages are placed as shown on a conveyor belt which is disengaged from its drive motor. Package 1 is just to the right of the horizontal portion of the belt. If the system is released from rest, determine the velocities of packages 1and 2 as they fall off the belt at point A. Assume that the mass of the belt and the rollers is small compared with the mass of the packages and that there is no slipping...
Assuming the target page is set up correctly, if the following link is placed on a site’s index.html page, what, precisely, happens at the browser when the link is clicked? Give ALL details.
A freshly cast metal object is placed in a shallow water bath to cool. The object is shaped like the intersection of two paraboloids, being the region above z = 1x2 + 1 y2 – 1, and below z=4 – x2 - y2. The water rises to the level z= 0. The object is still rather warm inside, with a temperature distribution T(x, y, z) = 200 – 1022 – 20x2 – 20y2 (a) If the heat flow within the...
4. A 6' by 6' by 24" (thick) cast-in-place reinforced concrete footing will be placed within a 20-foot thick surface layer of clayey sand. The footing will have an embedment depth of 3 feet. The soil has a cohesion of 200 psf, an internal friction angle of 28 degrees, and a moist unit weight of 116 pcf. The groundwater table is at a depth of 16 feet below grade, and there is no capillary rise. Perform a rigorous analysis to...