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George must choose between three alternatives that each have a 5-year life. Alternative A has a cost of $611 and annual benefit of $159. Alternative B has a cost of $498 and annual benefit of $138. Alternative C has a cost of $201 and annual benefit of $59. Using a MARR of 10% and benefit-cost ratio analysis, which alternative should George select? You must state here the B-C ratios (to 2 decimal places, e.g. 0.94 or 5.61) you used to make the selection.
question a person swings a 0.521-kg tether ball tied to a 4.60-m rope in an approximately horizontal circle. if the
determine the energy content of the food, in kJ/kg, by neglecting the thermal energy stored in the reaction chamber and the energy supplied by the mixer. What is a rough estimate of the error involved in neglecting the thermal energy stored in the..
A window has a glass surface are of 1.6x10^3 cm^2 and a thickness of 3.0 mm. Find the rate of energy transfer by conduction through the window when the temperature of the inside surface of the glass is 70F and the outside temperature is 90F.
A drinking straw 20 cm long and 3 mm in diameter stands vertically in a cup of juice 8.0cm in diameter. A section of straw 6.5cm long extends above the juice. A child sucks on the straw, and the level of juice in the glass begins dropping at 0.23c..
Explain physically (i.e., without using any equations) why it is expected that the width of the merged canal is less than the combined widths of the two original canals
A certain pipe has resonant frequencies of 385 Hz, 495 Hz, and 605 Hz, with no other resonant frequencies between these values. How long is this pipe
A 26 µF capacitor and a 5.50 mH inductor are connected in series with an open switch. Determine the angular frequency of the charge oscillations in the capacitor after the switch is closed
Light with ? = 760 nm is diffracted by a single slit, and the first intensity minimum (the first dark fringe) occurs at ? =3°. What is the width of the slit
A rock is dropped into a hole 11.40 m deep. The speed of sound is 340 m/s. How many seconds later will the sound of striking the bottomed are heard
A ball launched from ground level lands 2 s later on a level field 30 m away from the launch point. Find the magnitude of the initial velocity vector
A fluid with viscosity n flows through a tube of radius R and length L. What must be the radius of the second tube so that both fluids have the same volume flow rate
On a hiking trip, you are walking through a canyon with vertical walls and are closer to one wall than the other. find the width of the canyon
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