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1. A type of rock is supposed to follow the Mohr-Coulomb linear strength criterion, the strength of the rock sample under uniaxial compression test is σc = 40 MPa, the angle between failure plane and the maximum principal stress σ1 is θ = 60o. If triaxial compression test is conducted on this rock sample with confining pressure σ3 = 3MPa, please calculate:
(a) The axial stress σ1 when the sample fails;
(b) The normal stress (σ) and shear stress (Τ) on the failure plane.
The force needed to keep a car from skidding on a curve varies jointly as the weight of the car and the square of the speed and inversely as the radius of the curve.
The perimeter of a basketball court is 114 meters and the length is 6 meters longer than twice the width. What are the length and width?
How long does it take to reach 60% of the terminal velocity? (Round your answer to two decimal places.)
a semicircular plate 14 feet in diameter sticks straight down into fresh water with the diameter along the surface. Find the force of the water on side of the plate. The weight-density of water is 62.4 lb/ft^3.
Continental charges $20 per day in addition to $.50 per mile to rent out the same truck. How many miles must you drive in a day to make the rental cost for basic rental a better deal than that for continental?
the relationship between the respondent’s education educ & the education received by his or her father, paeduc {only an SPSS solution will be accepted}.
How much red paint needs to be added to 6L of white paint to create the same shade of pink ( Explain you're work and solve.)
A salesperson's weekly paycheck is 50% more than her coworker's paycheck. The two paychecks total $660. Find the amount of each paycheck.
The table list data - Average Salaries of Athletes in 1991 and 2001. Use the data points to find a linear function that fits the data and then use the function to predict the average salary in 2005 and 2010.
A rectangular piece of cardboard is twice as long as it is wide. A 4cm square is cut out of each corner,and the sides are turned up to make a box with an open top. the volume of the box is 616cm^3. find the original dimensions of the cardboard.
3x x+2 , if x -2. (a) Find the limit from the right and the limit from the left of f (x) as x approaches -2. (b) Is it possible to define f (-2) so that f is continuous at x = -2?
a grocer mixes together four pounds of peanuts costing $2 per pound with two pounds of walnuts costing $5 per pound. what should the price per pound of this mixture be?
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