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To study the effect of curing temperature on shear strength of a certain rubber compound, 80 specimens were cured at 150oC and 95 were cured at 130oC. The specimens cured at 150oC had an average shear strength of 620 psi, with a standard deviation of 20 psi. Those cured at 130oC had an average shear strength of 750 psi, with a standard deviation of 30 psi. Determine a 95% confidence interval for the difference between the mean shear strength of specimens cured at the two temperatures.
Sketch a streamline, pathline, and streakline, For a given flow the velocity from time t=0 to t=5s was u=2 m/s, v=0. Then from t=5s to t=10s the velocity was u=+3 m/s, v=-4 m/s. A dye streak was started at t=0
An object has a mass of 46kg and weighs 450N on a spring scale. Determine the acceleration due to gravity at this location.
The length of the wire is 7,000 m, the weight density of the steel is 78 kN/m3 and its ultimate stress is 620 MPa. Find the safety factor of the wire against breaking from its own weight.
For carbon tetrachloride, the boiling point constant is 5.03°C · kg/mol, and the boiling point of pure carbon tetrachloride is 76.50°C.
Write a computer program that can be used to determine the internal shear and moment at any specified location x along the beam, and plot the shear and moment diagrams for the beam.
which design checks that are performed on a rectangular clarifier are not performed on a circular clarifier
Estimate the size of a uniform, horizontal welded-steel pipe installed to carry 14.0 ft^3/sec of water 20 degreesC. The allowable pressure loss resulting from friction is 17ft/mi of pipe length.
How much (in addition to your trade-in value) can you afford to spend for a car averaging 30 mpg You expect to drive 15,000 mile/year and expect gasoline to cost $4.00/gallon and you will keep he car 10 years. Your personal interest rate is 6%/yea..
A pipe is to be installed under the ground on a bed of aggregate 6 in. thick. The entire weight on the aggregate from pipe and soil above the pipe is 1800 lbs. per linear foot of pipe. What is the pressure on the soil if theta is 45 degrees? Assum..
If the car passes point A with a speed of 20m/s and begins to increase its speed at a constant rate of At=0.5m/s^2, determine the magnitude of the car's acceleration when s=100m and x=0.
What is the peak discharge for an area with the following characteristics The rainfall intensity is 120 mm/hour. Land use Area, m2 Forest 10,000 Single family residential 9,000 Parking lots 5,000
A 10 m diameter particle of unit density falls through air starting from rest. calculate the time required for the particle to attain 70% of the final terminal speed and the distance traveled by the particle during the time.
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