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A company is trying to decide which machine to purchase based on the following information. If they all have 15 years useful life and MARR is 10%, use incremental rate of return analysis in Excel to decide which one is the best choice. Don't forget the do nothing choice.
First Cost
Operating Cost per year
Annual Income per year
-50,000
-2500
4500
-45,000
-2000
4000
-40,000
-1800
3800
-65,000
-2400
6000
0.25 kg of red-hot 700 c coals are taken from the fireplace and left in the middle of a room. the room is 3 m x 4 m x
x 3000 a100 m 75 c kgcd 0.5 skydiver area 0.4m2cd 1.2 parachute area 40m2a sky diver weighing m kg jumps from a
A disc 40 cm in diameter and 5 cm thick is to be cast using pure aluminium in an open mould operation. The melting point of aluminium is 660°C, and the pouring temperature will be 800°C.
the 500 lbf motor is supported on springs with a total stiffness of 5000 lbfin. the springs have a damping ratio of
saturated water vapor at 350c is heated at a constant pressure until its volume has doubled. determine the final
air initially at a dry-bulb temperature of 45oc and relative humidity of 10 is adiabatically humidified to 60 relative
The position of a particle one straight line is s=2t^2-12t5 (ft), where t is in seconds.
Write a program to solve a banded linear system of equations using the Gauss-Seidel method. A user is prompted for the file paths containing the coefficient and constants matrices. The matrices are provided and loaded using csv read. Then the user mu..
(a) The mechanical efficiency of the pump and (b) The temperature rise of water as it flows through the pump due to the mechanical inefficiency.
a roast is in an oven and weighs 2.25 kg. it is initially at 6 degrees celsius and needs to be heated to 80 degrees
a company wishes to enhance its image by replacing oil-based plastics in its products by polymers that are based on
Water flows at a rate of 20 l/s through a horz pipe dia .03 m. The pressure drop across the valve in the pipe is measured to be 2 kPa. Determine the irreversible head loss of the valve, and the useful pumping power needed to overcome the resulting..
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