A flexure test is done to determine the modulus of rupture of wood. Given that a=15in, L=34in, and the maximum load P that was applied was 5950lbf, what is the modulus of rupture of wood?

## Calculate the maximum bending stressa round steel rod, 25 mm in diameter, subjected to a bending moment of 160 Nxm. calculate the maximum bending stress. |

## Determine the normal depth in a trapezoidal channelDetermine the normal depth in a trapezoidal channel with a bottom width of 6.4 ft and side slopes of 1 vertical to 2 horizontal. The discharge is 85 ft3/s. Manning's roughness factor is 0.025 and the channel bottom slope is 0.001 |

## What is the angle theta required for equilibriumwhat is the maximum weight of the crate that the system can support? What is the angle theta required for equilibrium? |

## Determine diameter of second pipe is four timeswater flows through a pipe of diameter 3 inches. If it is desired to use another pipe for the same flow rate such that the velocity head in the second pipe is four times the velocity of the first pipe.determine diameter of pipe |

## Find summer values for oxygen tranfer-hp and airflow rateA fine-bubble aeration basin has a flow of 21.5 mgd, an influent BOD of 180 mg/l, 31 mg/l of mmonia, and effluent of 10 mg/l. During the winter, the wastewater temperature of 14.8 degrees C does not nitrify. |

## Determine what is the outlet air temperatureA total of 13,610 kg/h of air at 1 atm abs pressure and 15.6C is to be heated by passing over a bank of tubes in which steam at 100C is condensing. The tubes are 12.7mm OD, 0.61 m long, and arranged in-line in a square pattern with Sp=Sn= 19.05mm. |

## What is the ratio of the magnitude of e2 to the magnitudeWhat is the ratio of the magnitude of E2 to the magnitude of E1? You may neglect the effects of gravity on the proton. |

## Determine what is the discharge in cubic feet per secondA 2 foot tall multi-stage weir placed in a channel to cause the water to flow over the contracted weir at a height of 0.75 feet. There are 2 contractions and the original length is 6 feet. What is the discharge, in cubic feet per second |

## Estimate the pressure change over 80 m of pipelineWater at 20ºC flows at a velocity of 2 m/s in a 200-mm diameter horizontal ductile-iron pipe. a) Estimate the friction factor in the pipe, and state whether the pipe is hydraulically smooth or rough. |

## Problem related to skaters with massesPhysics two skaters with masses of 65 kg and 45 kg, respectively stand 8.0 m apart each holding one end of a rope. |

## Determine the storage content at the end of 30 daysDuring a particular 30-day period, the streamflow flowing into a reservoir averaged 5.0 m3/s. Water supply withdrawals from the reservoir averaged 136 mgd. The only other outflow from the reservoir was 9.4 cm of evaporation from the water surface. |

## Determine the downward deflection of the tray centerA tray rests on an extendible arm consisting of two steel tubes with two different outer diameters. The downward force at the tray center F0 = 1000 N. Determine the downward deflection of the tray center and the tilt angles of the tray about each .. |

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