A sand is isotropically consolidated in a triaxial test apparatus to 420 kPa and then sheared with the drainage valves open. At failure, (f1 - f3) is 104 kPa. Determine the major and minor principal stresses at failure and the effective stress friction angle (assume c' = 0). Plot the Mohr diagram.

Explain and identify and explore contemporary challenges : Identify and explore contemporary challenges and opportunities in information systems and to formulate an opinion or judgement and offer possible solutions. |

Choose the technique that is best suited for the problem : given f(x) = -2x^6 - 1.5x^4 + 10x +2. use a root location technique to determine the maximum of this function. perform iterations until the approximate relative error falls below 5%. |

What is the force that the towrope applies to the skier : A skier of mass 64 kg is being towed up a slope ( µ = 15 ±) by a towrope at a constant speed of 3 m/s, what is the force (in N) that the towrope applies to the skier |

How much will you have to invest year between now and then : It appears the annual payment required to reach your target is more than you can afford. If the most you can afford to invest each year is $1,200 what average annual rate of return must you earn in order to reach your target? |

Determine the major and minor principal stresses at failure : Determine the major and minor principal stresses at failure and the effective stress friction angle (assume c' = 0). Plot the Mohr diagram. |

Determine the net present value of the laser : Determine the Net present Value of a machine that takes little plastic boxes to hold a variety of playing cards. The machine requires an initial investment of $750,000 and will return $200,000 in cash flow per year for exactly five years. The rele.. |

Is the net torque about the axle due to these forces zero : The rod shown in the drawing is pivoted about an axle passing through its center (solid circle). Is the net torque about the axle due to these forces zero |

Is the 12-month u.s. risk-free interest rate above : Is the annualized 6-month U.S. risk-free interest rate above, below, or equal to the British risk-free interest? |

Calculate the coefficient of volume expansion : You heat a 507 cm3 sample of a substance from 131 °C to 265 °C, Calculate the coefficient of volume expansion of this substance |

## Calculate pump power equired to operate the heat exchangerThe heat exchanger consists of 12 m of copper tubing that is 2 cm in diameter with 19 return bends. The flow rate is 3 x 10-4 m3/s. Water enters at 20 C and exits at 80 C. The elevation difference between the entrance and the exit is 0.8 m. |

## Generate a table showing in the first column the mass valuesWrite a MATLAB code that calculates the weight (forces due to gravity) in lbf on each planet of our solar system and earth's moon for probes/rovers which have a mass between 100 lbm and 300 lbm. Use increments of 20 lbm. |

## Determining the amount of investmentIf they plan to increase their savings by 5% each year, how much must they invest in the first year given that they expect to earn 4% per year on their investment? |

## Find what is the space-mean speed of the traffic at capacityon a specific westbound section of highway studies show that the speed-density relationship is u= uf [1-(k/kf)^3.5] It is known that the capacity is 4200 veh/h and the jam density is 210 veh/mi. |

## What is the recommendation to get a basic refrigeratorQuinton's refrigerator has just died. He can get a basic refrigerator or a more efficient refrigerator with an energy star designation. Quinton earns 4% compounded annually on his investments, he wants to consider a 10-year planning horizon |

## Explain how the difference in piezometric pressureA manometer is used to measure the pressure difference between points A and B in a pipe. Water flows in the pipe, and the specific gravity of the manometer fluid is 2.8. The distances and manometer deflection are indicated. |

## Probability of the functions of car batteryThe probability that a new car battery functions for over 10,000 miles is .8, the probability that it functions for over 20,000 miles is .4, and the probability that it functions over 30,000 miles is .1. If a new battery is still working after 10,.. |

## Determine what is the volume change of the tubea circular aluminum tube of L=600 mm is loaded in compression by forces P. The outside and inside diameters are d2=75 mm and d1=63mm, respectively. A strain Gage is placed on the outside of the tube to measure normal strains in the longitudinal di.. |

## Calculate the hydraulic conductivity of this clayA falling-head permeability test was carried out on a clay soil of diameter 100 mm and length 150 mm. In 4 minutes the head in the standpipe of diameter 5mm dropped from 680 to 350 mm. Calculate the hydraulic conductivity of this clay. |

## Determine what is the total force on the roof at collapsea storage tank has a diameter of 80 ft, a height of 25ft and contains oil to a height of 15ft. the suction pumps, which can handle 15000bbl/d, are started, but the safety valves are clogged and a vacuum is drawn in the tank. |

## Find the maximum axial tension using lrfdNo incisions are noted. Find the maximum axial tension using LRFD. Can we resist the same force in compression if the member is 10ft long? |

## What is the probability that the maximum 24 hour depthUsing the Gumbel probability function, estimate the probability that a maximum 24 hour depth in any year will exceed 160 mm. What is the probability that the maximum 24 hour depth will exceed 125 mm |

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