A room has a floor area of 500 m^2 and a height of 4 m. THe room is involved in a fire with a constant energy release rate of 1 MW. calculate the time till the smoke layer is 1.5 m from the floor for:

(a) the case where the leakage areas are at the floor level.

(b) the case where the leakage areas are at the ceiling level.

Design size of smoke vents in the ceiling with the objective : A storage room in an industry has a floor area of 30 m by 50 m and a height of 10 m. A garage door has a width of 3 m and a height of 3 m and the room has four windows that are 0.9 m by 0.9 m, situated at the height of 1 m from the floor. |

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What must the beta be for the other stock in your portfolio : You own a portfolio equally invested in a risk-free asset and two stocks. if one of the stocks has a beta of 1.05, and the total portfolio is exactly as risky as the market, what must the beta be for the other stock in your portfolio? |

Determine the mass of the bar : When 4425 J of heat are added to a 0.16-m-long silver bar, What is the mass of the bar |

Calculate the time till the smoke layer is from the floor : A room has a floor area of 500 m^2 and a height of 4 m. THe room is involved in a fire with a constant energy release rate of 1 MW. calculate the time till the smoke layer is 1.5 m from the floor for (a) the case where the leakage areas are at the .. |

Determine the net present value of the laser : Determine the net present value of the laser if the intial investment increases to $250,000? |

The firstround of the des decryption : Compute the bits number 1, 16, 33, and 48 at the output of the firstround of the DES decryption, assuming that the ciphertext block iscomposed of all ones and the external key is composed of all ones |

Steam enters convergingâ€“diverging nozzle operating at steady : Steam enters a convergingâ€“diverging nozzle operating at steady state with P1 = 40 bar, T1 = 400oC, and a velocity of 10 m/s. The steam flows through the nozzle with negligible heat transfer and no significant change in potential energy. At the exit, .. |

Calculate air velocity and mass flow rate through the slit : the room described in problem 8.1 gas a 1 m wude door with a 1 cm high slit at the floor level. THe oil spill has a rectagular area of sides 0.5 m by 0.5 m. (a) calculate the pressure increase, the air velocity, and the mass flow rate throug the sl.. |

## Calculating energy for vacancy formationThe number of vacancies in some hypothetical metal increases by a factor of 4 when the temperature is increased from 1090 K to 1140 K. Calculate the energy (in J/mol) for vacancy formation assuming that the density of the metal remains the same ov.. |

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## Percent by weight of limestoneA slurry containing 20 percent by weight of limestone (CaCO 3 ) is processes to separate pure dry limestone from water. If feed rate is 2000kg/h, how much CaCO 3 is produced per hour? |

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## Determine max hoop stresses on inside fibers of rifle barrelDetermine the maximum hoop stresses on the inside fibers of a rifle barrel which is 3 feet long with an O.D. = 3.0" and an I.D. = 1.0". The internal pressure = 10,000 psi. Use the F.E. reference manual for determining these stresses. |

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## Calculate the depreciation expense of the equipmentAt the end of year 1 the piece of equipment is worth $15,000 and at the end of year 2 $13,000, and at the end of the third and final year the salvage value is equal to $9,000.Applying the straight line depreciation, calculate the depreciation expe.. |

## Plot the values on a graph of u versus y for earths surfaceThe Earth's surface creates a boundary layer in the atmosphere. The velocity profile near the surface can be expressed as a power law, u = a * y n, where the constants a and n depend on the roughness of the surface. |

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