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The initial cost of a pickup truck is $10,478 and will have a salvage value of $3,959 after five years. Maintenance is estimated to be a uniform gradient amount of $142 per year, with zero dollar for first year maintenance. The operation cost is estimated to be $0.39 per mile for 446 miles per month. If the interest rate is 12%, what is the annual equivalent cost (AEC) for the truck?
a residential heat pump with a coefficient of performance of 2.4 delivers energy to the dwelling at a rate of 20 kw.
a truncated cone 30 cm high is constructed with aluminum. the diameter at the top is 7.5 cm and the diameter at the
A viscous fluid is contained between two infinitely long, vertical, concentric cylinders. The outer cylinder has a radius ro and rotates with an angular velocity v. The inner cylinder is fixed and has a radius ri. Make use of the Navier–Stokes equati..
determine (a) the reaction at end A and B , (b) the minimum required cofficient of static friction at end A
the heat supplied by a heat pump used to maintain a buildings temperature is often supplemented by another source of
Calculate the specific removal rate and MRR (Volume of metal removed/sec) of Nickel in a certain electro chemical dissolution process, when a current of 500 A is being passed through the cell. Assume current efficiency = 100%. Atomic Weight of Nickel..
the exhaust gas from a diesel-powered electric generation plant will be used to generate steam in a shell-and-tube heat
For a tall column resting on the ground, axial stress develops due to the columns weight. (a) Derive the stress as a function of position z measured from the bottom of the column, and the total contraction of the column.
a rocket is held stationary by the horizontal force fx and the vertical force fz. the celocity and pressure of the
determine the maximun concentrated load that can be applied at the midpoint of a 3-m simple span. Neglect the weight of the beam.
two kg of propane are initally saturated liquid at 0c. it undergoes an isentropic process that cools it to -40c.a what
refrigerant 134-a enters a compressor as a saturated vapor at 200 kpa at a rate of 0.04 m3s. the power input to the
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