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Consider the elevated temperature crack growth characteristics of ceramics in which glassy films at grain boundaries undergo viscous deformation at high temperature. Provide a physical reason for the argument in Section 11.7.3 that, for fixed values of the maximum stress intensity factor and cyclic frequency, an increase in fatigue crack growth rates occurs in the following sequence of waveforms: triangular -> sinusoidal -> trapezoidal or squar
Helium gas contains trace amounts of methane. Consider a helium balloon pressurized to 5 psi. If methane molar mixing ratio is 800 ppmv, what is the pressure of methane in the balloon?
Knowing that the coefficents of friction between the tape and the drums are us=.40 and uk=0.30 and that drum C is free to rotate, determine the smallest allowable value of P if slipping of the tape on drum B is not to occur.
Determine the number of gallons of paint needed to paint the outside surface of the water-supply tank, which consists of a hemispherical bottom, cylindrical sides, and a conical top. Each gallon of paint can cover 250 ft^2
Rope BCA passes through a pulley at point C and supports a crate at point A. Rope segment CD supports the pulley and is attached to an eye anchor embedded in a wall. Rope segment BC creates an angle of = 74.0 with the floor and rope segment CD
Suppose that a person who boards the elevator on the ground floor gets off on the fifth floor. Assuming that the elevator has achieved operating speed by the time it reaches the second floor and that it is still moving at its operating speed as it..
Write a script file to simulate 100 plays of a game in which you flip two coins. You win the game if you get to heads, loose if you get two tails, and flip again if you get one head and one tail.
Compute the design strengths of a rectangular beam with bw=15 in, d = 36 in, d'=2.5 in, fy= 60ksi, fc'=4ksi, and at the top of the beam are 4 #8 bars, the bottom has two rows of 4 #10 beams
Write a script newquot.m that uses the Newton quotient, [f (x + h) - f (x)]/h, to estimate the first derivative of f (x) = x3 at x = 1, using successively smaller values of h: 1, 10-1, 10-2, and so forth. Use a function M-file for f (x).
the circular top of a can has a radius of .0320m. the pull-tab has an area of 3.8x10^-4 m^2. the absolute pressure of the carbon dioxide in the can is 1.40x10^5Pa. find the force that these gas generates on the top of a can?
Determine the force that should be developed in the cable if the saddle keeps the pipe from sagging or deflection at its center. The pipe and fluid within it have a combined weight of 125lb/ft. EI is constant.
The total annual runoff from small drainage basin is determined to be approximately normal with a mean of 14.0 in. and a variance of 9.0in^2. Determine the probability that the annual runoff from the basin will be less than 11.0 in.
Consider two closed systems A and B. System A contains 3000 kJ of thermal energy at 20°C, whereas system B contains 200 kJ of thermal energy at 50°C. Now the systems are brought into contact with each other. Determine the direction of any heat tr..
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