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Solve the given problems.
An airplane wing is designed such that a certain cross section is an ellipse 8.40 ft wide and 1.20 ft thick. Find the equation that can be used to describe the perimeter of this cross section.
A one meter diameter cylindrical mass is connected to a 2 meter wide rectangular gate. the gate is to open when the water level drops below 2.5 meters. Determine the required value of the mass of the cylinder in kgs.
An irrigation channel is constructed of earth and is 8.1km long and has a capacity of 10 m^3/s for a flow depth of 2m. The cross section is trapezoidal with a bid width of 8 m and side slopes of 2 horizontal to 1 vertical.
The 90-lb force is required to drag the 200-lb crate 60 ft up the rough inclined plane at constant velocity. If the force is removed when the crate reaches point B, and the crate is then released from rest
Past experience indicates that the time for high school seniors to complete a standardized test is normal random variable with a mean of 35 minutes.
A variable-order reaction A-->B has the following rate expression: R(a) = -kC(a)/(K+C(a)) where k = 5mg/L-hr and K=40mg/L The reaction is to take place in a batch reactor. The initial concentration is 450 mg/L
The power loss, p , in a journal bearing depends on length, L; diameter, D; clearance, c; and rotational speed, w. You also have to worry about lubricant viscosity, density, and pressure. Obtain the dimensionless groups that charactrize this probl..
If the purlins are spaced 4 ft and the bents are spaced 25 ft apart, determine the distributed loading that acts along the purlin DF and the loadings that act on the bent at A,B,C,D, and E.
Consider a Carnot heat-engine cycle executed in a steady-flow system using steam as the working fluid. The cycle has a thermal efficiency of 35%, and steam changes from saturated vapor at 300 C during the heat addition process. If the mass flow rate ..
An 18in. diameter sewer is placed on a grade of 1.5ft/1000ft. What are the discharge and the flow veloctiy when the pipe is full
Matt is building a stand made out of mud bricks ( ultimatecompressive strength approximately 100 psi and density 250lbs/cubit foot) in the shape of a tent (triangular sides, verticalfront and back).
A typical energy of a laser pulse from such lasers is 1 mJ. Suppose that energy is uniformly distributed over the laser spot, and the effect is constant during the pulse (a square pulse).
A balloon is being inflated at the rate of 15m^3/min. At what rate is the diameter increasing after 5 min? Assume that the diameter is zero at time zero.
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