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Solve Prob. P5.49 for glycerin at 20°C, using the modi- fied sphere-drag plot of Fig. 5.11.The sphere in Prob. P5.48 is dropped in gasoline at 20°C. Ignoring its acceleration phase, what will its terminal (constant) fall velocity be, from Fig. 5.3a?
Prob. P5.48
A smooth steel (SG= 7.86) sphere is immersed in a stream of ethanol at 20°C moving at 1.5 m/s. Estimate its drag in N from Fig. 5.3a. What stre quadruple its drag? Take D 2.5 cm.
Select a pair of structural steel channels mounted back to back to support the loads in such a way that the deflection at midspan will not exceed 1/ 16 in and the maximum stress will not exceed 6 kpsi. Use superposition.
the 4-kg collar c can slide freely along the smooth rod ab. at a given instant rod ab is rotating with an angular
Consider a model of a building whose base moves as a result of an earthquake. The building can be modeled as a single-degree-of-freedom spring-mass system where the building mass is lumped on top of two beams used to model the walls of the building.
5000 kghr of water will be heated from 20o c to35o c by hot water at 140oc a 15o c hot water temperature drop
an adiabatic pump operating at steady state compresses liquid water from an initial condition of 10 bar and 40degc to a
Perform a dimensional analysis to determine the dimensionless groups that would be required to define the pump performance. Arrange the groups so that the power and pump pressure each appear in only one group.
a rigid tank contains an ideal gas at 1227 c and 200 k pa. the gas is cooled until the gauge reads 50 k pa. if the
determine the weight and cost of prepeg required to produce a hollow composite tube outside diameter 50mm wall
a pump supplies oil at 20 gpm to a 2 in diameter double-acting hydraulic cylinder. if the load is 1000lbsextending and
a balanced wheel supported on springs is rotating at 1200 rpm. if a bolt weighing 15 g and located 5 cm from center
Consider the classical adiabatic saturation process in which a stream of is mixed adiabatically and isobarically (T1)with a stream of liquid water in order (T2) to become a saturated air +water vapor mixture . Show that the adiabatic saturation tempe..
design a hydraulic circuit that will cause the 2 cylinders to extend and retract using a single directional control
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