Engineering, 18.02.2020 22:54, Ruijinzhang7686
A small-scale silver mine in north Idaho is up for sale by bid. A mining engineer estimates that at current production levels, the mine will yield an annual net income of $80,000 for 35 years, after which the silver will be exhausted.
If an investor’s MARR is 15%, what is the maximum amount that the investor can bid on this property?
Answers: 1
Engineering, 04.07.2019 18:10, wyattlb97
Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?
Answers: 3
Engineering, 04.07.2019 19:10, moneyyfletcher
The air in an automobile tire with a volume of 0.015 m3 is at 32°c and 140 kpa gage. determine the amount of air that must be added to raise the pressure to the recommended value of 206 kpa gage. assume the atmospheric pressure to be 128 kpa and the temperature and the volume to remain constant.[r-0.287 kj/kgk]
Answers: 3
Engineering, 04.07.2019 19:20, mads000
Determine (a) the maximum thermal efficiency of reversible power cycles operating between a hot reservoir at 1000°c and a cold reservoir at 200°c and (b) the maximum cops for reversible refrigeration and heat pump cycies, respectively, between 28°c and 14°c.
Answers: 1
A small-scale silver mine in north Idaho is up for sale by bid. A mining engineer estimates that at...
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