Design a vapor-compression refrigeration system that will maintain the refrigerated space at -15°C while operating in an environment at 20°C using refrigerant-134a as the working fluid.

## What percent increase in shear force would be experienceWhat percent increase in shear force would be experience on the flat sides of a 40 ft long truck trailer as the truck speed increases from 65 mph to 75 mph. Kinematic viscosity of the air is 1.6x10^4 ft^2/s. |

## Average shearing stressTwo strips of a plastics material are bonded together as shown. The average shearing stress in the glue must be limited to 1000 kpa. |

## Calculate the change in reservoir pore volumeA reservoir cover is 12,000 acres and is 20 feet thick. The formation has initial porosity of 0.25. The pore volume compressibility of the reservoir rock is 3.0 x 10^(-6) psi^(-1) . Calculate the change in reservoir pore volume (in barrels) if the re.. |

## What is probability that clearance meets the specificationsThe diameter of the hole is normally distributed with a mean 15 cm and standard deviation 0.025 cm, and the diameter of the piston is normally distributed with mean 14.88 cm and standard deviation 0.015 cm. |

## What is the equivalency factor for the 14 kip single axleWhat is the equivalency factor for the 14 kip single axle? |

## Determine the dimensions of an ideal circular settling tankdetermine the dimensions of an ideal circular settling tank that can remove 0.01-in diameter particles with a specific gravity of 1.01. Use a detention time of 1.5 hours, flowrate= 4ft^3/sec, the specific weight of water=62.4 lb/ft^3 |

## What bolt sizes must be used for the allowable shear stressA structural steel beam is attached to a column with bolts. The downward force on the connection is 150 kips. What bolt sizes must be used if the allowable shear stress is 25.0 ksi |

## How deep hole in yards would be formed as result of excavatnThe Metrodome's inflatable roof covers 10.0 acres and its interior volume is 60.0x10^3 cubic feet. During construction, 40.0x10^3 cubic yards of concrete, 11.9x10^3 tons of reinforcing steel, and 5.00x10^2 tons of structural steel were utilized. |

## What is the resultant force on one side of a 25cm diameterWhat is the resultant force on one side of a 25cm diameter circular plate standing at the bottom of 3m of pool water |

## Determine how many candy bars needs to take with womanA 68 kg woman is planning to bicycle for an hour. If she is to meet her entire energy needs while bicycling by eating 30 g chocolate candy bars, determine how many candy bars she needs to take with her. |

## How to calculate the ph of clean rain in the scenarioThe pH of clean rain is influenced by the partial pressure of CO2 in the atmosphere. In addition, acid rain can be formed when sulfur dioxide (SO2) is discharged into the atmosphere. i) The atmospheric CO2 concentration could rise to 400 ppmv by 20.. |

## What is the pressure force on one side of the discA vertical semicircular disc of 2 m diameter is submerged in a liquid of SG = 0.76 such that its diameter, which is at the top, is parallel to the liquid surface at a depth of 3 m. What is the pressure force on one side of the disc? |

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