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1) Blood flows through a 0.5 cm diameter artery of 50 cm length. The viscosity of blood can be assumed to be 3 cP. The mean hydrodynamic pressure drop is 17 mm Hg.a) What is the shear stress of blood at the artery wall dyn/cm^2 ?b) What is the shear rate of blood at the artery wall?c) What is the volumetric flow rate of blood in cm^3/s ?
2) You are designing a hollow fiber unit. The flow-rate of blood is assumed to be at high enough a rate that blood behaves as a Newtonian fluid. The fiber diameter is 600 microns and their length is 30 cm. You want a flow-rate of 12 ml/min for each fiber. What should be the pressure drop in mm Hg across the fiber length to achieve this flow-rate? (760 mm Hg= 101,325 N/m^2).
Consider a virtual memory system that can address a total of 232 bytes. You have unlimited hard drive space, but are limited to only 8 MB of semiconductor (physical) memory. Assume that virtual and physical pages are each 4 KB in size.
In general, what observations can be made about a physical system that has pole and zero locations that are not eitehr real-valued or complex conjugate pairs
what is the open- circuit voltage. power supply has isolated +- 15V and +-6V outputs,what is the maximum positive voltage and maximum negative voltage that can be output from power supply.
The signal x(t) = sin(2pi(100)t),was sampling with sampling period T=1/400 second, 1- obtain a discrete time signal x(n) 2-what is the maximum sampling period which allows perfect reconstruction
A storage tank has a Diameter of 20ft and a height of 10ft. The output volumetric flow from this tank is given by fout(t)=2h(t) where h(t) is the height of the liquid in the tank. At a particular time the tank is at steady state with an input flow..
A silicon diode has a reverse current of 5 uA and 25 degrees celcius and 100uA at 100 degrees celcius. What is the saturation current and surface leakage current at 25 degrees celcius
1. Consider the Nordex 1.3MW, 60-m wind turbine with power specifications given in table 6.7 located in an area with 8m/s wind speeds. a) find the average speed in the wind (W/m^2) assuming Rayleigh statistics.
A tree-phase, 60Hz, 5MVA synchronous generator has balanced line-to-line voltages of 8320V at its terminals. if the generator is supplying power to delta-connected, balanced load of 5MVA at a 0.8 lagging power factor
Three screws are drawn at random from a lot of 100 screws, 10 of which are defective. Find the probability that the screws drawn will be nondefective in drawing (a) with replacement, (b) without replacement.
The battery is built by connecting several unit cells in series. Each unit cell has the voltage V1=1.4 V and the internal resistance Ri = 3.2 Ohm; 1) How many unit cells in series must the battery use to have the open-circuit voltage Vo.c. = 11.2 V
A 200 g block on a 50 cm long string swings in a circle on a horizontal, frictionless table at 75 rpm. What is the speed of the block What is the tension in the string
Power Systems Theory Definitions and Formulas, Define, (a) The fault level of a system or unit in a system, (b) base MVA
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