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The 10-lb lamp fixture is suspended from two springs, each having an unstretcfhed length of 4 ft and stiffness of k=5lb/ft. Determine the angle theta for equilibrium.
what are reasons for difference in the coefficient of kinetic friction on horizontal surface with a hanging mass at constant velocity compared to object one on incline
The soil below the footings consists of a medium grain sand (SP) and water is located at a depth of 5 feet below the ground surface. The preliminary structural plan calls for a 10 foot wide footing
what is the chemical composition of steel and what is the effect of carbon on the mechanical properties of steel
A fireman reduces the exit area on a nozzle so that the velocity inside the hose is quite small relative to the exiting velocity. What is the maximum exiting velocity and what is the maximum height
Compare the head loss for water flow (Q=5 cfs) in a 12 in., 3000 ft. long steel pipe using the darcy-weisbach equation and the hazen-williams formula.
The top of the object is 1 m below the surface of the fluid. What are the magnitude and direction of the hydrostatic force acting on the top of the object.
A car is traveling along a road at a uniform velocity when at time zero the driver recognizes a hazard. At a moment 0.8 seconds later the driver brakes her vehicle , resulting in her vehicle sliding
Balance by the compass rule the departures and latitudes listed in the following closed-polygon traverse. Calculate the linear misclosure, relative precision, and adjusted lengths and bearings &nbs
You arrive at your bus stop at some random point in the cycle, what is your expected wait time, w(t), to board a bus. Be sure to show your work or you will lose points. What is the standard deviatio
A 2,150 lb car is traveling at sea level at a constant speed. Its engine is running at 4500 rev/min and is producing 150 ft-lb of torque. It has a driveline efficiency of 90%, a driveline slippage o
Testing has shown that at a local race track (0.25 in length) racecars have a maximum side friction factor of 0.08. The smallest turn radius on the oval track is 150 feet and has a banking of 20 d
A circular hole of diameter 11.42 + and - 0.03 inches is cut out of the plate. Also, using the tolerances given, determine the minimum possible area of the top surface of the meta
At what depth will 400 cfs flow uniformly in an earth lined (n = 0.025) trapezoidal canal of base width 15 ft having side slopes 1 on 3 if the canal is laid on a slope of 1 in 10,000.
What is the smallest diameter pipeline that may be used to carry 6.3 L/s (100 gpm) of water if the flow is to be laminar
A surveyor is going to take a 5.5 mile sight across a lake from the top of one tower to a target on the top of another tower. It is desired to keep the line of sight 6 ft above the lake surface.
A smooth nozzle with a tip diameter of 2 inches terminates a 6 in waterline. Calculate the mean velocity of efflux from the nozzle when the velocity in the line is 10 ft/s.
A square with the dimensions of .02m by .02m by .5m is attatched to a solid surface. If the forces on the rod are too large, it will either crush or be sheared off where it is atatched to the solid
After the Christmas break one student returns carrying a flu virus. Assume that the rate at which the virus spreads is proportional to the number of infected students P(t), but also to the number 50
a 2m cube of block is placed on oil ( SG= 0.8). if the SG of the block is 0.6, how many meters of the block will be above the oil
A flat rectangular metal plate measures 17.63 + and - 0.02 inches by 26.85 + and - 0.04 inches. A circular hole of diameter 11.42 + and - 0.03 inches is cut out of the plate.
Water flows upward in a vertical 12" pipe at the rate of 7.85 cfs. At point A in the pipe the pressure is 30.5 psi. At B, 15 ft above A, the diameter is 24" and the lost head A to B equals 6 ft.
Oil (specific gravity 0.752) flows through a 6" horizontal pipe under a pressure of 60 psi. Assuming no losses, what is the flow in cfs if the pressure at a 3" diameter reduction is 20 psi
The road has 12-ft lanes. Due toexpensive excavation, it is determined that a maximumof 34 ft can be cleared from the road's centerline toward the inside lane to provide for stopping sight distance.
A 1400-ft-long sag vertical curve (equal tangent)has a PVC at station 115 + 00 and elevation 750 ft. The initial grade is -3.5% and the final grade is +6.5%. Determine the elevation and stationing