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The annual cost of operating a heat pump at year-end prices is R, with units of $/yr. The costs are expected to inflate at a yearly rate of f. Money is discounted at the yearly rate of i. The life of the heat pump is n years. The potential cost benefits of the heat pump are to be examined by placing all costs on a uniform annual basis.
A. Show that the uniform annual costs are
What is the PW of R? What is the annual value, Ac, of PW? Simplify the expression for Ac.
B. Compute Ac for R = $7,800.00/yr, f = 5%, n = 25 yr, and i = 10%
suppose the rate of growth of a bacterial population n cellsliter is described by dndt kn -1000. the terms represent
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consider 5 kg of air initially at 101.3 kpa and 38 c. heat is transferred to the air until the temperature reaches 260
Determine the required length L of each splice if a factor of safety is 2.75.
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the body is formed of slender rod and rotates about a fixed axis through point with the indicated angular properties.
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determine the steady-state solution for the following differential equations. if resonance exists for the equations
a diesel engine performs 2090 j of mechanical work and discards 4125 j of heat each cycle.a how much heat must be
1- find the decay constant of cesium-137 half-life 30.2 y then calculate the activity in becquerels and curies for a
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