Air undergoes a polytropic expansion process in a piston-cylinder assembly from 75 psia and 300 F to 15 psia. Employing the ideal gas model with constant specific heat ratio k, determine the temperature at the end of the process and the amounts of work and the heat transfer per unit mass in Btu/lb if

a) n=1.3

b) n=k

with k=1.4 and R=0.0686 Btu/lbR

Determine the magnitude of the acceleration of the particle : A particle is traveling along a circular curve having a radius of 13 m. If it has an initial speed of 21m/s and then begins to decrease its speed at the rate of at = (-0.25s)m/s2 |

Creat an intrest account for amazon : Write a program with subclass InterestAccount and CDAccount. The driver program (Account.java) must perform following transactions. |

Compute the elevation and station of the bvc and evc : A -2.8% grade line meets a +3.6% grade line at station 125+00 at elevation of 1631.04. Assuming a length of curve is 650feet, compute the elevation and station of the BVC (PVC) and the EVC (PVT). |

What is the time between the explosions : The star Alpha goes supernova. Ten years later and 80 ly away, as measured by astronomers in the galaxy, star Beta explodes. what is the time between the explosions |

Employ the ideal gas model with constant specific heat raio : Employing the ideal gas model with constant specific heat ratio k, determine the temperature at the end of the process and the amounts of work and the heat transfer per unit mass in Btu/lb |

Write a program to input the month and day of the birthday : Write a program to input the Month and Day of the birthday then use case statements to output the birthstone, and month. You can use if statements for the horoscope sign. You should use a function to test the Date and be sure it is valid. |

What is the wavelength of the protons : An electron moving to the right at 0.900c collides with a positron moving to the left at 0.900c. What is the wavelength of the protons |

Outline and explain the concept of internal marketing : Assignment Question: Outline and explain the concept of internal marketing and why it is important is services products. How would you introduce an effective internal marketing programme to an organization? |

Write a program to randomly select the numbers of 4 finalist : You have four identical prizes to give away and a pool of 25 finalists. The finalists are assigned numbers from 1 to 25. Write a program to randomly select the numbers of 4 finalists to receive a prize. |

## Which machine should be chosen using an interest rateNorth City must choose between two new snow-removal machines. The SuperBlower has a $70,000 first cost, a 20 year life, and an $8000 salvage value. At the end of 9 years , it will need a major overhaul costing $19,000. |

## Define energy transfer in mechanical systemsEnergy transfer in mechanical systems, A wheel is 800mm in diamiter and has a mass of 1000kg. on a horizontal surface without skidding, the vehicle accelerates uniformly at 0.5m/s^2 for 5 seconds. |

## Bidding for the project assignmentShould Bernard bid for the project assignment? Why or why not? Does Bernard have an unfair advantage over firms having designed the project on which he wants to bid? |

## Find appropriately sized beam such that radius is not lessThe yield stress for A-36 is 250 MPa. Using factor of safety against yield of 1.25, determine an appropriately sized beam such that the radius of curvature is not less than 140m. E= 200 GPa, G= 77.2 GPa. |

## Find what diameter pipe is required to triple the capacityGiven an 18-in. concrete conduit with a roughness coefficient of n = 0.013, s = 0.02, and a discharge capacit of 15 cfs, what diameter pipe is required to triple the capacity |

## Qualitative or quantitative risk assessment on the projectConduct either a qualitative or quantitative risk assessment on this project. Identify the risk factors that you consider most important for the suspension bridge construction. How would you assess the riskiness of the project? Why? |

## Calculate the mass emissions rate of no2Assuming that the average stack gas velocity is 10.0m/s and the stack is circular with a 3.0 meter diameter, calculate the mass emissions rate of NO2 in kg/day. |

## Calculate specific internal energy of water leaving valveWater is at 9000 kPa and 300 degrees celcius and flows through a partially open valve. Pressure immediately after the valve is measured to be 600 kPa. Calculate the specific internal energy of the water leaving the valve |

## Find the mass of air in a closed chamber measuringFind the mass of air in a closed chamber measuring 35 ft by 20 ft by 10 ft, when the pressure is 17 lb/in^2 and the temperature is 75°F, assuming air to be an ideal gas |

## Define the problem to be researchedWhen Eurasia restaurant, serving Eurasian cuisine, first opened along Chicago's Michigan Avenue, its novelty brought many diners. |

## Calculate max tensile force that the cable can withstandA cable is made of two strands of different materials, A and B, and cross sections as follows: For material A, K = 60, 000 psi, n = 0.6, Ao = 0.6 in2 For material B, K = 30, 000 psi, n = 0.5, Ao = 0.3 in2 |

## Determine what is the pace length and the length of abA student counted 92,90,92,91,93, and 91 paces in six trials of walking along a course of 200 ft known length on level ground. Then 85,86,86 and 84 paces were counted in walking four repititions of an unknown distance AB. |

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