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12 lbm of superheated water vapor at 60psia and 500deg C in a piston cylinder device is cooled at constant pressure until 70% of the mass condenses. Find the moving boundary work in Btu. Is the work done on or by the system?
Describe the physical properties of water that are relevant to its critical roles in plant physiology.
a large tower is to be supported by a series of steel wires.it is estimated that the load on each wire will be 11100N. determine the minimum required wire diameter assuming a factor of safety of 2 and a yield strength of 1030MPa.
The 160-N weights of the arms AB and BC of the robotic manipulator act at their midpoints. Determine the sum of the moments of the three weights about A.
calculate the minimum possible magnitude u of the muzzle velocity which a projectile must have when fired from point a
in a crank or slotted lever quick mechanism the distance between the fixed centre is 150 mm and driving crank is 75 mm. determine the ration of the time taken of cutting & return strake .
During the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the work input during this process. R(air)=287j/KgK
What is the primary difference between the strength of a structure and the strength of a material? Is a strong material stiff?
Calculate the force required in direct extrusion of 1100-O aluminum from a diameter of 6 in. to 2 in. Assume that the redundant work is 30% of the ideal work of deformation, and the friction work is 25% of the total work of deformation.
the initial velocity v0 of a hockey puck is 105 mih. determine a the largest value less than 45deg of the angle a for
three cstr are to be used in series. the second reactor has a volume twice that of the first and the third reactors.
for a turning operations you have selected an hss tool and turning a hot rolled free machining steel bhn 300. your
How many engagement points on the flywheel would be necessary to make this machine safe? Show your work.
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