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The bar ABC of negligible weight is supported by a pin at A and a rope that runs around the small pulley at D and the 20-lb homogeneous disk. Determine the tension in the rope.
A mixing chamber has two steady streams and one steady stream. The properties of the first stream is superheated steam at T1 = 400oF, h1 = 1,239 Btu/lbm and flow rate m1 = 20 lbm/h. The second stream is compressed liquid at T2 = 70oF, h2 = 38 Btu/lbm..
Assuming a density of 120/ft^3 for masonry brick work, determine the max height of a brick wall if the allowable compressive stress is limited to 150/in^2 and the brick is a) 4" wide b) 6" wide.
The sign is attached to the post that is built-in at the ground. Treat the sign as having uniform mass. Neglect the contribution of the post weight. The length d is from the center plane of the sign to the center of the post.
An in-ground swimming pool may have a leak. The 30-ft by 10-ft by 5-ft (depth) pool is filled on June 1. On June 13, a hose, flowing at a rate of 10 gallons per minute, is used to add water to the pool. The hose is turned off after 1 hour.
A completely reversible heat engine operates with a source at 1500 R and a sink at 500 R. At what rate must heat be supplied to this engine, in Btu/h, for it to produce 5 hp of power?
An ideal Brayton refrigeration cycle has a compressor ratio of 3.75. The air enters the compressor at 1bar, 27°C. The temperature at the inlet of the turbine is 77°C. Using Air Standard Method Determine on a per unit mass of air flowing
You are a construction engineer working on a large concrete foundation project, involving the placement of over 500,000 c.y of concrete. The construction site is adjacent to a salt-water source (bay) & it is decided to set up a concrete batch plant o..
A new space age development corporation in wichita kansas has borrowed a sum of $4M from a friendly bank at an interest rate of 9%. the company has also borrowed another $1M from other sources at an interest rate of 8%
Three cylinders from the same mix were tested for strenght. Cylinders A and B were cast in 4x8 molds while cylinder C was cast in a 6x12 mold. The total loads were as follows; cylinder A= 65,200 lbs., cylinder B= 68,550 lbs., cylinder C= 151,190 l..
Derive an expression relating effluent concentration to influent concentration, hydraulic residence time, and the reaction rate constant for a zero order reaction in a CSTR at stead-state.
Water is flowing in a trapezoidal channel with 10 ft bottom width and 2H/IV side slopes. The channel is running on a slope of 0.00778 ft/ft and the flow exerts a shear stress of 1.5 lbs/ft2 on the channel bed. What is the depth of flow in this cas..
Assuming no friction losses in the hose, will the velocity change if the hose is draped over the handrail going around the pool instead of going under it?
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