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a gate having a cross section closes an opening 5 ft wide and 4 ft high in a water reservoir. its center of gravity is one foot to the left of AC and 2 ft above BC. Determine horizontal reaction dev
A liquid has the peculiar property that its mass density increases linearly with depth according to the expression p = p_water (1+0.01d) where d is the depth below the liquid surface in meters.
Calculate the max capillary rise of water between 2 verticle glass plates spaced .25mm apart and the minimum capillary drop if the same plates are placed .25mm apart are in mercury
Compute the stresses and deflections at the corner of the slab according to Westergaard and Ioannides. Compute the stresses and deflections at the edge and interior according to Westergaard.
A factory discharges its waste into a river upstream from a lake. The discharge release rate is 2 kg formaldehyde per day. The decay is a first order process with a decay rate of 0.000005/s.
Three loads are applied to a beam. the beam is supported by a roller at A and by a pin at B. neglecting the weight of the beam, determine the reaction at A and B when P=15kips.
A process in a plant is to be revised such that the air flow rate through a system will increase from 8000 cfm to 10,000 cfm. The existing fan runs at 1600rpm and provides 6.0 in. H2O SP.
Assuming that the average stack gas velocity is 10.0 m/s and stack is circular with a 3.0 meter diameter, calculate the mass emissions rate of NO2 in kg/day.
The segments of pipe and couplings used for drilling an oil well 15,000 ft deep are made of A-36 steel weighing 20 lb/ft. They have an outside diameter of 5.50 in. and an inside diameter of 4.75 in.
f the design speed of a multi-lane highway is 60 mph, what is the minimum sight distance that should be provided on the road if (a) the road is horizontal and (b) the road has a maximum grade of 5 p
After operating for a period of time, assume that the opening size decreases to 10-mm due to the accumulation of materials (debris) on the screens.
What is the shape of a water droplet from a leaking tap. How does that shape change before and after dropping from the tap. What properties of fluids play a role in this change in shape.
The following data are taken: RU=130.0m, RS=120.0m, ST=90.0m, angle RST= 115 degrees, and angle RUT= 100 degrees. Calculate the length of side UT and the area of the plot.
A disk spins within an oil-filled enclosure, having 2.4 mm clearance from flat surfaces each side of the disk. The disk surface extends from radius 12 to 86 mm.
salary 65000 per year, jane plans to retire in 25 years. Annual anticipated increaase is 3000 a year. she plans to deposite 5% of her yearly salery, into retirment fund that earns 7% intrest compounde
If the diameters are 2 cm and 4 cm, respectively, calculate the fluid viscosity if the torque on the inner cylinder is measured to be 0.0026 N*m.
Successive plus and minus sights taken on a downhil line of levels are listed below. the values represent the horizontal distances between the instrument and either the plus or minus sights.
Explain the log growth phase of population generation showing the population growth curve (S curve). Deduce the equation for this method of population projection.
The acceleration of a particle is defined by the relation a=-8m/s^2. Knowing that x=20m when t=4s and that x=4m when v=16m/s, determine (a) the time when the velocity is zero
For an SO2 emission rate of 22,000 kg/day and an exhaust gas flow rate of 5.0 million m^3/hour(after the scrubber) measured at 150 C and 1atm pressure, calculate the concentration of SO2 in the exha
A horizontal curve on a two-lane highway is designed with a degree of curvature of 7 degree and a 50mph design speed. The coefficient of side friction for the design speed is 0.14. Deflection angle
A saturated soil has a unit weight of 120 pcf and a water content of 32.5%. Determine the void ratio and specific gravity of the soil.
what are the possible combinations of inflow and outflow of water in the tank in a given day. if the water level in the tank is 7ft from the bottom at the start of day, what are the possible water l
A tow truck is using a cable to pull a car up a 15 degree hill. If the car weighs 4000 lbs and the cable has a diameter of .75 inches, find the stress in the cable when the truck comes to a stop whi
The tank material is such that it can withsatand tension caused by a volume expansion of 2%. Determine the max temperature rise in Celcius degress allowed without jeopardizing safety.