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A block of wood has a mass of 3.67 kg and a density of 600 kg/m3. It is to be loaded with lead (1.14 x 104 kg/m3) so that it will float in water with 0.900 of its volume submerged. What mass of lead is needed if the lead is attached to?
(a) The top of the wood and
(b) The bottom of the wood?
the shaft is made of a992 steel with the allowable shear stress of tauallow 75 mpa. if gear b supplies 15 kw of power
a steam radiator in a well-insulated room 4m times 4m times 5m contains superheated vapor at 200kpa 200c. it has a
The truncated nozzle shown in the figure below is used to monitor the mass-flow rate of air in a pipe. The area of the nozzle is 3 cm2. The total pressure and total temperature measured upstream of the nozzle in the pipe are 300kPa absolute and 20°C.
a horizontal insulated cylinder has a frictionless piston held against stops by an external force of 500 kn. the piston
the central cubical area of an office building at sea level has a floor area of 4000 ft2 and is occupied by 30 people
an ideal rankin cycle uses water as a working fluid which circulates at a rate of 80kgs. the boiler pressure is 6 mpa
sandbag is released from hot air balloon at an altitude of 1312ft. the net effect of gravity and aerodynamic friction
Use K-maps to determine an optimal equation for each output. Convert each equation to use, at most, one gate. Draw a circuit that implements each equation from part c.
determine the reactions at locations a and b as scalar components with a unit of n for a force and n-m for a moment.
a jack having a pitch of 12 inch has a lever the outer end of which passes through a circle 9 feet in circumference.
Hot coffee of temperature T[infinity] = 90°C is poured into a cup whose wall is initially at the temperature Ti= 10°C. The porcelain wall of the cup is 0.5 cm thick. The heat transfer coefficient between the coffee and the wetted surface is h= 700 W/..
Jacky Brown, a maintenance manager of a local plant in reviewing the maintenance records of production equipment, has compiled the following maintenance cost data: 5 years ago $500; 4 years ago $ 600; 3 years ago $700; 2 years ago $800; and Last year..
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