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The self-regulating floodgate ABC, pinned at B, is pressed against the lip of the spillway at C by the action of the 3645-lb weight A. If the gate is to open when the water level reaches a height h = 6 ft, determine the distance x locating the weight A. Neglect the weight of the gate.
Neglecting the mass of the pulley and the effect of friction in the pulley and between block A and the horizontal surface. Determine (a) the initial tension in the table (b) the initial acceleration of Block A (c) the initial acceleration of Block..
A stream is in equilibrium with atmospheric oxygen upstream of a waste outfall. The waste outfall creates a BODo of 20 mg/L in the stream. The k(BOD) is 0.4 /day and the k(o2) is 1.4 / day. The stream temperature is 15 degrees Celsius.
Can any low enough backup pressure generate an isentropic supersonic flow?
Steam at 10 MPA, 600 C, enters a well insulated turbine operating at steady state and exits at 0.1 bar and a quality of 92%. The volumetric flow rate at the inlet is 0.36 m^3/s. Assuming the kinetic and potential energy effects to be negligible, dete..
Assuming a reaction-rate coefficient of 0.1/day, calculate the ultimate and 5-day CBOD of the waste at the point of dis-charge (0 km) and 20 km downstream. The river is flowing at a velocity of 10 km/day.
A compressor is used to bring saturated water vapor at 1 MPa up to 15 MPa, where the actual exit temperature is 650?C. Find the irreversibility and the second-law efficiency.
The end of a 0.75-in-diameter rod is fixed to an immovable plate as shown. The length of the rod is 18.0 in. A 50-lb weight is attached to a 16.0-in lever at the end of the Rod so that the weight is hanging perpendicular to the longitudinal axis of t..
A small nitrogen container is at Pressure P1 = 5 bar and T1 = 300 K. It's been filled from a larger nitrogen container, which is P= 10 bar and T = 300 K. The filling process ends when pressure in the small container
Two new rides are being compared by a local amusement park in terms of their annual operating costs. The two rides are assumed to be able to generate the same level of revenue (and thus the focus on costs). The Tummy Tugger has fixed costs of $10,000..
A Fe-.25 w/o Carbon alloy is sloly cooled to 700 degrees C. What is the composition of the Ferrite(alfa) phase and what is the compositon of the cementite(Fe3C) phase. Whate are the relative fractions of ferrite and cementite
The forces acting on the sailplane are represented by three vectors. The lift L and drag D are perpendicular. The magnitude of the weight W is 500 lb. If the magnitude of the resultant of the three forces is 0
For the state of plane stress shown- construct mohr's circle using graph paper, determine the principle planes and principal stresses,
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