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An accelerometer is measuring a structure as described below: Damping ratio of accelerometer = 0.65 Highest frequency measured by the accelerometer = 6000 hz
Natural frequency of the accelerometer = 18000 hz
What is the percentage error in the accelerometer at the highest frequency it can measure?
The prototype and model will both be in air, if the prototype has a velocity of 500 ft/s and a diameter of 30 ft, what should the velocity for the model be if the model diameter is 2 ft
A slope face is cut in granite with sheet joints dipping as shown. A) Disregarding information about cohesion or friction along the joint surfaces, state why the cut is stable
Consider a 2D triangular element with the three vertices at 1[1,1], 2[1,2] and 3[2,2]. the displacements at these t hree points are [0.1,0.1], [0.3,0.2] and [0.4, 0.3] mm for point 1,2,and 3 respectively
A rod consisting of two cylindrical portions AB and BC is restrained at both ends. Portion AB is made of steel (E=29x10^6 psi, α=6.5x10^-6) and portion BC is made of aluminum (E=6.5x10^-6 psi, α=13.3x10^-6).
What is the diameter of a circular concrete column needed to support a load of 300,000 pounds with a factor of safety of 2? Round the diameter up to the whole inch. The concrete ultimate strength is 3000 lb/in^2.
The highway engineer of a certain road construction decided to use a radius of 100 m. in laying out a simple curve having an angle of intersection
A standard five-day BOD test is run using a mix consisting of fourparts distilled water and one part wastewater (no seed). Theinitial DO of the mix is 9.0 mg/L, and the DO after five days isdetermined to be 1.0 mg/L. What is BOD5 ?
There is a scheduled receipt of 100 Cs in week 2. Quantities required of each are also shown.
1. Describe why materials such as aluminum, steel, basswood, and Polystyrene Plastic and structures are important in our everyday lives. 2.Write a paragraph to explain to a lay person a few of the important factors
The uniform 4 meter boom has a mass of 60 kg and is pivoted to the back of the truck at A and secured by a cable at C. Calculate the magnitude of the total force supported by the connection at A
Why do owners prefer the design-build form of contracts when many of them know they can obtain better quality construction using other forms. What are the stages at which the designer will schedule design reviews.
If there is no water vapor in the air, the oxygen partial pressure would have been 0.2. Assuming that nitrogen, oxygen, and water vapor are the only important contributors to the gas pressure, calculate the equilib-rium constant at 25°C for the re..
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