
a gate having cross section shown in fig closes an opening 5 ft and 4 ft high in a water reservoir. The gate weighs 400lb and its center of gravity is 1 ft to the left of AC and 2 ft above BC. Determine the horizontal reaction that is developed on the gate C

A 200 lb homogeneous gate of 10 ft width and 5 ft long is hinged at point A and held in place by 12 ft long brace as shown in fig. As the bottom of the brace is moved to the right, the water level remains at the top of the gate. The line of action of the force that the brace exerts on the gate is...

Which of the following was Not a result of the invention of the cotton gin? a. Cotton Profits increased enormously b. Cotton growers used profits to build more textile mills c. Cotton production increases required more slaves d. Cotton plantations extended as far west as Texas

1. (19 points) Calculate the equilibrium concentration of dissolved oxygen in 15 C water at 1atm and again at 2,000m elevation. 2. (30 points) Calculate the pH of a soft drink an aqueous CO2 concentration=0.066667 mol/L. The solution will be somehow acidic. 3. (21 points) Find the...

what is the term used for an external force applied to an object

If C=AB and A is a second order tensor and B is a first order tensors, how do you prove that C is a first order tensor, using only index notation (not matrix notation)?

An athletic student is walking towards a campus shuttle bus that is momentarily stopped. When she is 240 feet behind the bus, it begins to accelerate at 0.6 ft/s2. She instantly begins to run at a constant 18 ft/s.

A 2.50g sample of a large biomolecule was dissolved in 25.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85 C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is 5.03 C kg/mol, and the boiling point...

Chromate waste is concentrated by evaporation in a series of shallow flow through reactor tanks connected by a short length of pipe. The first tank in the series has a volume of 4500 ft3. The evaporation rate is about 1/16 of the volume of each tank. Assume that CrO42 does not volatilize (i.e.,...

A manufacturer of rat poison in Texas proposes to build a circular lagoon to concentrate the arsenic in its rinse water by evaporation. The rinse water is produced at a rate of 10,000 gpd (gallons per day) and contains 2.5 mg/L of arsenic. To reuse the water exiting the lagoon in the...
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