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1. A water tank is 10 m in diameter and the normal depth is 8 m. The outlet is a short 3-inch internal diameter horizontal pipe at the bottom.
(a) What is the initial flow rate of water from the tank? (Neglect friction loss in the pipe).
(b) How long will it take for the tank to be half empty?
(c) What is the average flow rate during that process?
(d) When the tank is half empty, a feed to the tank with a flowrate of 0.08 m^3/s is started, without stopping the outlet flow. How long will it take to refill the tank to the normal height of 10 m?
2. A system consists of superheated steam at 1.0 MPa and 250 C. The steam then slowly expands isentropically until it reaches a final pressure of 100 kPa. Assume that heat can flow into or out of the system to ensure the process is isentropic, but the amount of material in the system is constant. What is the enthalpy of the system (per kg of material) at the conclusion of the expansion?
3. Calculate the fugacity of n-butane at 400 K and at a molar volume of 435 cm^3/mol assuming that n-butane can be described with the van der Waals equation of state.
Overall heat transfer coefficient is 3000 W m2 K. Calculate the heating surface required in calandra in m2 and the economy of the evaporator.
Find the rated and maximum torques.
Create a frequency distribution to present these data.
Determine the concentration of biomass at t=2h assuming quasi steady state. If alpha=0.2g/g Determine the concentration of product at t=2h assuming P0=0
Often, the gene sequences placed on microarray slides are of unknown function. Suppose that an experiment identifies such a gene as being important for formation of a particular type of tumor. Explain how you might use resources at NCBI to identif..
For a given substance, strong intermolecular forces between molecules of the substance can cause peak broadening of some of the absorptions in the infrared spectrum of the substance
Determine the mass flow rate of the steam and the state of the steam at the exit of the nozzle.
Draw another diagram overlaying the Pourbaix diagrams for nickel and silver and use this diagram to explain the likely outcome of holding a solution of nickel ions in a silver container.
Current transformer with air core. Calculate the induced voltage in an air-filled, uniformly wound toroidal coil of n turns and cross sectional area as shown in Figure 10.51. The central wire is very long and carries a current 1(t) = I0 sin ωt.
Calculate the concentration of all ions present in each of the following solutions of strong electrolytes.
Estimate the total electric power requirements for the two cases, assuming that the actual work in both is 50% greater than required by Carnot refrigerators operating between the given temperatures.
In a process for the production of acrylic fibers by the emulsion polymerization of acrylonitrile, the unreacted monomer is recovered from water by distillation. Acrylonitrile forms an zoetrope with water and the overhead product from the column c..
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