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A river flows towards a lake with a velocity of 3 m/s and rate of 500 m3/s at a location of 90 m above the lake surface. Determine the total power generation potential of the river at that location.
A fireboat draws seawater with density 1030 kg/m3 through a 20 cm diameter inlet pipe at a rate of 0.1 m3/s. It discharges through a nozzle of 5 cm diameter that is 4 m above sea level. If the head loss is 3m and the pump is 70 % efficient, what pump power is required and what is the discharge velocity.
A hydroelectric plant passes 8 million gal/min across a head of 600 ft. If the turbine is 80 % efficient and head loss in the system is 200 feet. What is the power output?
A river upstream of a brdige corssing is 3 meters deep and has an average velocity of 3 m/s. The bridge piers cause a constriction in the width of the flow by 12%.
Consider CO2 emissions from a gasoline powered vehicle. Gasoline is acomplex mixture of hydrocarbons but for the purposes of this calculation assume an average molecular formula of C7H16.
What is the normality of a sodium hydroxide solution that contains 250 mg/L NaOH in 2.3 L solution? What is the concentration in mole/L and mg/L as CaCO3. Na = 23, OH = 17
A traffic engineer is trying to design a left turn bay on an EB approach to an intersection. The signal timing for left turns will have 10 seconds of "left turn only" green time and 50 seconds of red time each signal cycle.
Air enters an electrical furnace at 20oC, 100 kPa, with a volumetric flow rate of 30 m3/min. The furnace delivers air at 40oC to a duct system with three branches consisting of two 15-cm-diameter ducts and a 30-cm-diameter duct.
Determine the maximum allowable misclose for this engineering survey using the formula based on the munber of instriunent stations used in the work.
The available relay for switching a secondary circuit requires 4 volts and has a coil resistance of 145 ohms. If a voltage divider circuit is used to reduce the voltage to activate the relay, what resistor is needed to create the necessary coil vo..
Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body?
An equal tangent vertical curve connects a -2% and a +3% grade. The low point of the curve is at elevation 297.88 ft. If the PVI is at elevation 295 ft, what is the design speed of the curve
38 mL of 0.02 N HCl is added to neutralize 50.0 mL of lime water (Ca(OH)2). Calculate the hardness of lime water as mg/L as CaCO3 and mg/L as Ca(OH)2.
When the gear rotates 18 revolutions, it achieves an angular velocity of omega= 40 rad/s , starting from rest. Determine its constant angular acceleration the time required.
At standard pressure, 14.7 psi absolute, it holds 0.5-slug of water; rho = 1.94 slug/ft^3. For K = 300,000 psi, when it is filled, how many slugs of water must be added to increase the pressure to 10,000 psi
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