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A spherical hot-air balloon is initially filled with air at 120 kPa and 35oC with an initial diameter of 3 m. Air enters this balloon at 120 kPa and 35oC with a velocity of 2 m/s through a 1-m diame
A J type thermocouple referenced at 70F has a measured emf of 2.878mV. What is the Tempature of the measured Junction?
A diatomic calorically perfect ideal gas in a piston-cylinder assembly undergoes a cycle. Find the specific heat transfer of the cycle.
Find how much should be cut off from free length of the spring to reduce the Fo from 40.49 to 31.3 lbf? Assuming that the lengths of Lo and Li stay the same.
Boron is diffused into highly pure germanium at 1000oC (Q = 105 kcal/mol; DO = 1.1 x 10 m2/sec). A steady surface concentration of 1.5 at.% B prevails at this temperature. a) After diffusing for &am
If the water is not to spill out of the tank once a steady-state free surface condition is reached, what is the largest acceleration (ax) permissible?
In a certain industrial dryer 4 kg/h of water is to be removed from a moist material. The drying is accomplished by passing air over this material.
Draw a sketch showing where those cracks initiate. and explain why do they devolop. and why they devolope at those particular points?
A highway sign experiences a wind force F = (5i - 12j - 3k) N at its center of gravity (0, 8, 8) m. Determine the moment of the wind force about the sign post base at the origin O.
A beam with length L = 40 in and a rectangular cross section with 2 in width and 3 in height, is subjected to a uniformly distributed load of 50 lb/in over its top surface. a concentrated force F= 1
How much easier would this job be if you had bought the more expensive lug wrench that featured a 36-in. span? State your answer in terms of the minimum force required from each arm.
In stress corrosion, the tensile stress (typically caused by internal pressure) and the corrosion (typically caused by oxygen in the fluid) work hand in hand to start and grow cracks.
A solid shaft has a diameter D, A hollow shaft made out of the same material has an outside diameter d and an inside diameter 0.8d.
Design a hydraulic circuit that will cause the 2 cylinders to extend and retract using a single directional control valve.The valve should provide extend retract and mid position capability.
A hydraulic press has four cylinders which are six inches in diameter. If oil is supplied at 400 gpm and at up to 5000 psi, What is the speed (fps) of the press?
A missile with a conical nose cone with a semivertex angle of 16 deg is flying through sea level air at a speed of 817 m/s and an angle of attack of 0 deg.
A four cylinder, 2.4 liter engine operates on a four stroke cycle at 3200 RPM. The compression ratio is 9.4:1, the connecting rod length r = 18 cm, and the bore and stroke are related as S = 1.06 B.
The dimensions of a i beam are thickness,t flange width b=10t and height =20t. Determine the absolute maximum bending stress in this i beam.
A piston-cylinder device containing carbon-dioxide gas undergoes an isobaric process from 15 psia and 80oF to 200oF. Determine the work and heat transfer associate with this process.
A pilot flying his ultralight aircraft at a speed of 60 mph. Under standard atmospheric conditions, what would be the maximum pressure on the pilots hand if he extended his hand into the windstream
Consider a Carnot Refrigeration cycle with a working fluid of R-134a operating between temperatures of -10oC. What is the rate of heat that is removed from the refrigerated space?
Cylinder conditions at the start of compression in an SI engine operating at WOT on an air-standard Otto cycle are 60 degrees C and 98 kPa.
Water vapor is cooled in a closed, rigid tank from 520C and 100 bar to a final temperature of 270C. Determine the final pressure, in bar, and sketch the process on T-v and p-v diagram.
3.84 knowing that the stepped shaft shown tranmits a torque of magnitude T=2.50 kip*in, determine the maximum shearing stress in the shaft when the radius of the fillet is (a) r= 1/8 in (b) r= 3/16
Find the elapsed time to vaporize the propane and total work produced Also find theoretically maximum possible total work output for the given QCOLD, WREV,MAX.