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A 4 meter long steel plate with a rectangular cross section (10mm x 50mm) is resting on a frictionless surface under the sun. The plate temperature is measured to be at 40 degrees Celsius. The plate is then moved into a cold room and is left to rest on a frictionless surface. After several hours, the plate temperature is measured to be at 5 degrees Celsius. The steel has a modulus of elasticity equal to 200000 MPa and a coefficient of thermal expansion equal to 1.1 x 10^-5 m/m/degress C.
A) what is the length of shrinkage?
B)what tension load is needed to return the length to the original value of 4 meters?
C)what is the longitudinal strain under this load?
Place the scientific mass on the inclined plane and string over the pulley. Using a force-measuring device, pull the string and determine the force needed to obtain static equilibrium.
The rigid bar AD is supported by two steel wires of (1/16)" diameter (E=29x10^6 psi) and a pin and bracket at D. Knowing that the wires were initially taut, determine (a) the additional tension in each wire when a 120-lb load P is applied at B
A centrifugal pump is used to pump Vodka (S.G. 0.8) at a rate of 20 gallons per minute to the top of a 30 foot tall tank. The owner wants to use the same pump to pump orange juice (S.G. 1.1). Explain how this change in fluid will affect:
For the profile shown, the initial ground water table is 5 ft belowthe surface. A proposed dewatering project will cause the watertable to drop 10 ft from the original level. Consolidation tests performed on clay samples produced the following result..
When the larger ball hits the ground and then collides with the smaller ball, it causes the small ball to bounce to a height several times greater than that from which the balls were originally released.
Let us pretend you are an earthwork construction control inspector and you are checking the field compaction of a layer of soil. After compaction in the field, the density of soil was checked by excavating part of the compacted soil
A town is installing a new 10” main to carry drinking water. The only section remaining to be installed is a segment through the middle of town. However, the excavators discover an archaeological site. The town decides to split the main into two sect..
A completely reversible heat engine uses a solar receiver for a hightemperature reservoir and a lake for a low temperature reservoir. The sun maintains the receiver surface at 290 ° F while the lake remains at 40 °F.
The partial pressure of the gasses in a 22,414-L volume of air at STP are: oxygen, 21,224 kPa; nitrogen, 79,119 kPa; argon, 0.946 kPa; and carbondioxide, 0.036 kPa. Determine the gram molecular weight of air.
part-1 writing case study about bridge collapse related to ethics part mention the case the reasonwho is response add
A river flows towards a lake with a velocity of 3 m/s and rate of 500 m3/s at a location of 90 m above the lake surface. Determine the total power generation potential of the river at that location.
At the end of a 0.6-m diameter pipe, the pressure is 270 KN/m2. The pipe is connected to a 0.3-m diameter nozzle. If the flow rate is 1.1 CMS, determine the total force in the connection
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