Question

Solve problem 10-6 using Mohr's Circle. Problem 10-6: The state of strain at the point on a wrench has components ε_x = 120 (10^-6), ε_y = -180(10^-6), γ_xy = 150(10^-6). Use the strain-transformation equations to determine (a) the in-plane principle strains and (b) the maximum in-plane shear strain and average normal strain. In each case specify the orientation of the element and show how the strains deform the element within the x-y plane

What amount of depreciation will you claim for each calender : What amount of depreciation will you claim for each calenderyear during the period 1972-1975? |

What is the rolling resistance of the loaded unit : Estimated rolling resistance factor the haul road is 3000 lb/ton. If the scraper weighs 35,000 lb (empty) and carries 25 loose cubic yards per trip. What is the rolling resistance of the loaded unit? |

What is the rolling resistance : He is concerned about the high rolling resistance of the units in the sand (RR factor 250lb/ton). What is the rolling resistance? |

Find the change in the energy of air in joules : Hummingbird moths are night-flying insects whose behavior and appearance are similar to those of hummingbirds. Explain how thes two organisms demonstrate the concept of convergent evolution.? |

How the strains deform the element within the x-y plane : Use the strain-transformation equations to determine (a) the in-plane principle strains and (b) the maximum in-plane shear strain and average normal strain. |

Determine the required diameter of the shaft : The pulleys attached to the shaft are loaded as shown. If the bearings at A and B exert only horizontal and vertical forces on the shaft, determine the required diameter of the shaft to the nearest 1/8 in. using the maximum-shear-stress theory of fa.. |

Determine the greatest weight of the machine that the beam : The beam has a flange width b=8 in. If the maximum bending stress is not to exceed σallow=22 ksi, determine thegreatest weight of the machine that the beam can support. The center of gravity for the machine is at G, and the supports at Band C are smo.. |

Determine the maximum allowable uniform load what : A W410 X 0.83 steel section is used in a10 m simple span. Determine the maximum allowable uniform load what the beam can carry if the allowable flexural stress is 165MPa, the allowable shear stress is 100 MPa, and the allowable deflection is 1/360 of.. |

Describe with the aid of diagrams explaining why and when : Describe with the aid of diagrams explaining why and when boundary layer separation occurs. c)Describe some methods to prevent boundary layer separation |

## Find the force exerted by the jet on the vaneA pipeline terminates in a nozzle of outlet diameter = 0.15 m. The free jet from the nozzle is deflected through 120º by a vane as shown. Water flow rate through this pipe is 0.25 m3/s. Ignoring friction, find the force exerted by the jet on .. |

## Find second year book value for equipment with initial costwhat is the second year book value for equipment with an initial cost of $11,000, a salvage value of 1,000 and a recovery period of 5 yrs for A. straight line depreciation. B. Double declining balance. C. MACRS |

## Four-lane freeway problemA four-lane freeway (two lanes in each direction) is on mountainous terrain with 11-ft lanes, a 5-ft right-side shoulder, interchange spacing of one every 10 miles, and a 60-mi/h base free-flow speed. |

## Calculate fiber weight fraction for unidirectional carbonFor unidirectional carbon/epoxy tape at a 60% fiber volume fraction, calculate E11 and E22. Given Ef= 211 GPa and Em =10 GPa. Calculate the fiber weight fraction. Given pf=1.95 g/cm3 and pm =1.3 g/cm3. |

## Calculate individual standard deviations for treatment groupOne issue is to calculate the "pooled" variance and "pooled" standard deviation. Since we expect that the variances of the improvement scores by both groups could be a bit different, we'd want an overall value that reflects the variance of both gr.. |

## How many tickets are given out on a particular dayThe number of parking tickets issued in a certain city on any given weekday has a Poisson distribution with parameter = 50. What is the approximate probability that 1 between 35 and 70 tickets are given out on a particular day |

## Determine the minimum entropy change of the thermal energyHeat is now added until the quality is 40 percent. Determine the minimum entropy change of the thermal energy reservoir supplying this heat. |

## Determine the mass distribution of lead in the marshIf metal sorption to algae can be modeled by a Langmuir isotherm, determine the mass distribution (sorbed vs dissolved) of lead in the marsh. Langmuir Isotherm Parameters Cs , sat 100 mg/g a 0.1 L/mg |

## Determine how much astronaut will weigh on the beam scaleAn 80 kg astronaut took his bathroom scale (a spring scale) and a beam scale (compare masses) to the moon where the local gravity is g=1.67 m/s^2. Determine how much he will weigh |

## Calculate its elongation when a load of 100n is appliedconsider a cylindrical copper wire 3.0mm in diameter and 3x10^4 mm long. calculate its elongation when a load of 100N is applied. Assume that the deformation is totally elastic and its Young Modulus is 110GPa. |

## Calculate the amplitude of vertical motion of the machineA machine is supported on four steel springs for which damping can be neglected. The natural frequency of vertical vibration of the machine-spring system is 200 cycles per minute. The machine generates a vertical force p(t)=p0sinwt. |

## Estimate concentration of tba after 10 minutes of oxidationA groundwater is contaminated with methyl tertiary butyl ether (MTBE) at a concentration of 20 mg/L.the groundwater will be treated with an advanced oxidation process that involves formation of hdyroxyl free radical (OH*). |

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