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A state legislator wishes to survey residents of her district tosee what proportion of the electorate is aware of her position on using state funds to pay for abortions. a)What sample size is necess
Let the cross - sectional area of the tube be given by A and the position of the cylinder by s , and assume that the compressed gas is an ideal gas at constant temperature so that the pressure P tim
Theis Method plot drawdown vs. time for 4 observation wells, 5, 50, 100, 500 meters from well pumping at constant rate of 300 m^3/day in sandy confined aquifer. b=12 m, K=25 m/day, and S=10^-4.
Calculate deformation of the truncated equilateral triangular steel pyramid. The pyramid has the height h of 156mm truncated at the top by 2mm and the base side s of 127mm.
calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. The air temperature is 20`C, canary's body internal and
Given the data , design a section of sanitary sewer to carry these flows at minimum velocity of 2.5 fps. Assume that the minimum depth of the sewer below the street must be 8.5 ft and that an n valu
You heat 250 ml of tap water from 10 degree celcius to 100 degree celcius in 2 minutes using a microwave oven operating at 2.5 GHz. a). What is the wavelength of this electromagnetic radiation
The following data were obtained for a plate-and-frame filter of total area A=500 sq cm. operating under a constant pressuredrop of 0.1 atm: Time t (min): 50 75 100 Volume of filtrate V (liter): 9.7
The bolts have a mean diameter of 1.000 cm, normally distributed with standard deviation of 0.010 cm. The holes have a mean diameter of 1.030 cm, normally distributed with standard deviation of 0.01
Suppose that a person who boards the elevator on the ground floor gets off on the fifth floor. Assuming that the elevator has achieved operating speed by the time it reaches the second floor and tha
A classic car is d riving down an incline at 60 km / h when its brakes are applied. Treating the car as a particle, neglecting all forces except gravity and friction, and assuming that the tires sli
Modeling the skydiver as a particle and assuming that the skydiver follows a perfectly vertical trajectory, determine the average force exerted by the parachute from the moment of deployment until l
The coefficients of static and kinetic friction are 0.3 and 0.2, respectively, between each of the plates and between plate A and the ground. Determine the acceleration of each plate.
A town is going to upgrade its primary WWTP to a secondary plant that can meet the effluent standard of 25 mg/L BOD5 and 30 mg/L suspended solids. They have selected a CSTR activated sludge system f
Find the horsepower added if the flow through the system is 400 m^3/s. The entrace is sharp, the two bends are equivalent to smooth 90 degree bends with R=1 ft, and there are two fully open gate val
A micro-channel of diameter 0.5 mm and length 750 mm is connected to a plenum. A fan produces a negative gage pressure of -1.5 inch H2O in the plenum and draws air at 20oC into the micro- channel.
The pinion gear rolls on the gear racks. If B is moving to the right at 8 ft/s and C is moving to the left at 4 ft/s, determine the angular velocity of the pinion gear and velocity of its center A.
The water depth before the jump is 0.4 m and after the jump is 1.7 m. Compute the flow rate in the channel, the critical depth and the headloss in the jump.
For a trapezoidal shaped channel (n=0.014 and slope = 0.0002 with a 20-ft bottom width and side slopes of 1:1.5 (V:H), determine the normal depth using trial and error technique for a discharge of 1
Determine the uniform flow depth in a rectangular channel 2.5 m wide with a discharge of 3 m3/s. The slope is 0.0004 and Manning's roughness coefficient is 0.015
write solution in a organized and easy to follow matter. Will rate life saver for diagram or picture.Water leaves a treatment plant in a 500-mm diameter ductile iron pipeline at a pressure of 600 kP
A stainless steel pipe (k= 17 W/m?C) is being used to convey heated oil. The inside surface temperature is 130?C. The pipe is 2 cm thick with an inside diameter of 8 cm. The pipe is insulated with 0
Determine the magnitude of which will cause the reaction at the bearing to be equal to zero. The bearings are in proper alignment and exert only force reactions on the rod. Set = 600 .
Determine the magnitude of F2 which will cause the reaction Cy at the bearing C to beequal to zero. The bearings are in proper alignment and exertonly force reactions on the rod. Set F1 = 550 lb.
Does anyone have suggestions for a topic for an engineering ethics presentation? It could be related to any type of engineering (computer, civil, mechanical, electrical, industrial, etc).