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Consider an 18-m-diameter hot-air balloon that, together with its cage, has a mass of 120 kg when empty. The air in the balloon, which is now carrying two 70-kg people, is heated by propane burners at a location where the atmospheric pressure and temperature are 93 kPa and 12°C, respectively. Determine the average temperature of the air in the balloon when the balloon first starts rising. What would your response be if the atmospheric air temperature were 25°C?
consider a fluid bounded by two parallel plates extended to infinity such that no end effects are encountered. the
How would you develop a project appraisal and project development Statement of Work process which would enable you to confidently 'cover off' all the factors which could impact the economic value of your proposal.
Determine the airflows and pressure drop in each of the branches and what are the flows and pressure drops in each of the branches?
Should you perform a clean installation or upgrade? Make sure you include a detailed rationale for your decision.
Write a program to repeat the following tasks continuously.- Turn all four LED lights OFF.- Wait in a loop until one of the push buttons is pressed.- After that, all LEDs must start turning ON and OFF five times with a one-..
Would you recommend a simple refrigeration cycle with refrigerant-134a or a two-stage cascade refrigeration cycle with a different refrigerant at the bottoming cycle? Why?
The following describes a mineral deposit. For the deposit the candidate is required to select a suitable mining method for the deposit based on the information given and to describe the mining system in detail. The candidate should include in their ..
problem 1 the board of directors of general wheels co. is considering seven large capital investments. each investment
Environmental engineering, CEE 357 Winter 2014. HW#6 Assignment: - Find the ultimate BOD of the river water as it enters the lake. Find the value of the rate constant for BOD utilization in the river, k d,riv .
Please describe the basic elements in a distillation process and what must be controlled in a distillation tower in order to ensure proper functioning of the distillation process?
a continuous miner has the following specifications ltbrgtcutter drum width 3.2m ltbrgtdrum diameter across the picks
Calculate the surface area and depth of an "ideal" settling tank to remove all 10um spherical particles (SG = 2.65) from 1000 m3 of wastewater per day and provide a detention time.
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