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1. Consider a fan located in a 3 ft * 3 ft square duct. Velocities at various points at the outlet are measured, and the average flow velocity is determined to be 22 ft/s. Taking the air density to 0.075 lbm/ft^3 estimate the minimum electric power consumption of the fan motor.
2. Large wind turbines with blade span diameters of over 100m are available for electric power generation. Consider awind turbine with a blade span diameters of 100 m installedat a site subjected to steady winds at 8 m/s. Taking the over-all efficiency of the wind turbine to be 32 percent and theair density to be 1.25 kg/m3generated by this wind turbine. Also, assuming steady windsof 8 m/s during a 24-hour period, determine the amount ofelectric energy and the revenue generated per day for a unitprice of $0.09/kWh for electricity.
3. An adiabatic closed system on earth is accelerated vertically from rest to 25m/s and the system is raised by a height of 110m. The system has a mass of 1.2 kg. If 1.8kJ of work is put into the system, determine the change in internal energy in kJ/kg.
4. A power plant extracts potential energy from a river to provide electrical power. The average amount of water flowing through the plant is 101,000lbm/s. The water intake for the power plant is 676 ft above the exit valves. If the power plant produces 100,000 hp, what is the efficiency of the power plant?
the sleeping aid ambien has a biological half-life of about 1.5 hours.nbsp assume someone takes a 10 mg dose at 900
Real time application of perimeter of a circle. To evaluate the distance travelled using the number of rotations.
complete assignment with
A family made an investment for 1 year that earned $7.50 simple interest. If the principal had been $25 more and the interest rate 1% less, the interest would have been the same. Find the principal and the rate.
several freshman tried out for the track team. after round 1 12 of them were eliminated. after round 2 13 were
Generate a table of conversions from inches to centi-meters. Start the inches column at 0.0 and increment by 0.5 in. The last line should contain the value 20.0 in.(Recall that 1 in= 2.54cm)
Jackson Sheds has four different warehouse configurations under study, ranging from four warehouses to seven warehouses. So they are considering whether to have 4, 5, 6, or 7 warehouses. Each warehouse has a capacity of 400 units and costs $2..
if q is the number of quarts lemonade, then 1/4 q can be used to find the number of cups of lemonade mix needed to make the lemonade. how much mix is needed to make each amount of lemonade? 2 quart 8 quarts
Kno withinknowing that this number, the golden ratio is present not just in mathematics but also be present within your own brain and body at the atomic or subatomic levelwhat do you think it means? Is this number evidence of a grand design, a mas..
certain drug is made out of two compounds only: A and compound B. To make this drug 6 parts of compound A are used for every 5 parts of compound B. If a chemist wants to make 957 milliliters of this drug, how many milliliters of compound B are nee..
A drug company believes that the annual demand for a drug will follow a normal random variable with a mean of 900 pounds and a standard deviation of 60 pounds.
the quality control manager shuts down an automatic lathe for corrective maintenance whenever a sample of the
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