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Problem: A cross-flow heat exchanger used in a cardiopulmonary bypass procedure cools blood flowing at 4 L/min from a body temperature of 37°C to 25°C in order to induce body hypothermia, which reduces metabolic and oxygen requirements. The coolant is ice water at 0°C, and its flow rate is adjusted to provide an outlet temperature of 19°C. The heat exchanger operates with the blood flow unmixed and the water flow mixed, and the overall heat transfer coefficient is 750 W/m2·K. The density and specific heat of the blood are 1050 kg/m3 and 3740 J/kg·K, respectively.
Required:
Determine the gravitational force acting between two spheres that are touching each other. The mass of each sphere is 400 kg and the radius is 300mm.
The motion of the outer frame B is given by xB = b sin ωt. For what range of the driving frequency ω is the amplitude of the motion of the mass m relative to the frame less than 2b?
A passive dosimeter is to be designed for use in obtaining monthly average concentrations of atrazine in a stretch of river. Typical concentrations range from 10 to 50 g/L. Atrazine, a herbicide commonly found in runoff from agricultural lands.
Consider two vortices of equal strength K = +1 located at (-2,) and (+2, 0). Estimate how far away the effect of the vortices is perceived to be that of an unique vortex. What would be the strength of that vortex?
A concentrated downward force of 2000 lb. is located 6' from the left support, and a uniformly distributed load of 200 lbs./lin. ft. begins 6' to the right end of the member. What force must be applied at each connection to maintain equilibrium?
How many days would they need to use the equipment each year to justify purchasing the equipment? To purchase equipmet/ Buy at $60,000, Operation and maintanence is $120/day, life is 5 yrs and salvage value is $5000.
acetic acid is a weak acid. Its Ka is 1.8(10^-5). For a concentration of 0.015 M, calculate the pH.
The water line to a house is usually 3'4" copper tube. Find the flow rate that can be delivered and still maintain laminar flow in the tube
The mass of arm BC is 4 kg, and the arm may be treated as a uniform slender rod.
Water flows through a 75 mm constriction in a horizontal 150 mm pipe. If the pressure in the 150 mm section is 345 kPa and that in the constriction 207 kPa, calculate the velocity in the constriction and the flowrate.
Determine the average molar mass of the mixture, the average specific heat at constant pressure of the mixture at 600 K, in kJ/kmol -K, and the partial pressure of the water vapor in the mixture for a mixture pressure of 200 kPa.
A toll booth on a turnpike is open from 8:00AM to 12 Midnight. Vehicles start arriving at 7:45AM at a uniform deterministic rate of six per minute until 8:15AM and from then on at two per minute
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