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1.It has been proposed to mix a 1500 L bath containing 5% by volume of H2SO4 with a 1500 L bath containing 5% by weight of NaOH. The Specific gravity of the acid added is 1.841 and its purity is 96%. The base added is 100% pure. Estimate the final pH and the final TDS (in mg/L) of the mixture of the two baths
2.A 12-lb collar is attached to a spring anchored at point C and can slide on a friction-less rod forming a 30 degree angle with the vertical. The spring has constant k and is unstretched when the collar is at A. Knowing that the collar is releasted from rest at A, develop an equation to determine the velocity of the collar at point B for any given value of k (k-range is 0.1-2.0 lb/in)
A sand with Gs=2.66 and e=0.60 is completely dry. It then becomes wetted by a rising groundwater table. Compute the unit weight under the following conditions: a.) when the sand is completely dry
A 1kg ball is dropped from the top of a cliff and falls with a constant acceleration due to gravity. Assume that effects of air resistance can be ignored.
In the Civil War there were numerous incidents in which the bullet fired from a Union soldier's rifle struck and fused with the bullet from a Confederate's rifle. Assume the impact scenario.
As a further exercise, try to find values of t for your approximation that keeps the error (i.e., the difference between the approximation and the real function v(t) ) less than 0.1.Hint: to help with this, ask yourself this question: where would mor..
A tracer dye is injected into a 55-ft thick sandy gravel confined aquifer which has a hydraulic conductivity of 1.2 x 10^-3 ft/s. The dye appears 14 days later in an observation well 75 ft away from the injection point.
When water at 70C flows through a convergingsection of pipe, the pipe pressure decreases in the direction of flow. Estimate the minimum absolute pressure that can develop without causing cavitation.
What is the dry unit weight, the saturated unit weight, and the buoyant unit weight, of a soil having a ratio of 0.5 and a value of Gs of 2.7
A second load P2 is uniformly distributed around the cap plate at B. The diameters and thicknesses of the upper and lower parts of the post are dAB= 1.25 in, tAB= 0.5 in, dBC= 2.25 in and tBC= .375 in respectively.
During the recent camping trip, a curious junior engineering student (like yourself) noticed that water is being discharged from a high reservoir to a stream in the valley through a 0.3 m diameter plastic pipe.
A car traveling over a hill at constant speed starts to lose contact with the ground at O. If the radius of curvature of the hill is 85 m, determine the speed of the car at O.
Cable AC is 70 ft long, and the tension i nthe cable is 5250 lb. Determine the x, y, and z components of the force exerted by the cavle on the anchor C. Also, find the angles theta-x, theta-y, and theta-z defining the direction of the force.
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.00 Hz. Ignoring the mass of the spring, what is the mass of the fish?
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