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Gerry likes driving small cars and buys nearly identical ones whenever the old one needs replacing. Typically, he trades in his old car for a new one costing about Si 5 000. A new car warranty covers all repair costs above standard maintenance (standard maintenance costs are constant over the life of the car) for the first two years. After that, his records show an average repair expense (over standard maintenance) of S2500 in the third year (at the end of the year), increasing by 50% per year thereafter. If a 30% decliningbalance depreciation rate is used to estimate salvage values, and interest is 8%, how often should Gerry get a new car?
Benzene, p= 54 lb/ft^3 at 100 F is pumped at a rate of 40 gpm. The reservoir is open to atmosphere and below the pump centreline by 4 ft. The discharge line is 10 ft above the pump centreline. The gage at discharge reads 50 psig. The discharge line i..
a crate with weight w165 lb and mass center g is placed on a slide and released from rest as shown. the lower part of
a particle is moving along a straight line such that its acceleration is defined as a -2v ms2 where v is in meters per
A rigid container has 0.75 kg water at 300oC, 1200 kPa. The water is now cooled to a final pressure of 300 kPa. Find the final temperature, the work and the heat transfer in the process.
The diffusion coefficient for Cr+3 in Cr2O3 is 6E-15 cm2/s at 727 C and is 1 E -9 cm2/s at 1400 C. Determine the activation energy and the constant Do
While tripping out using a high viscosity mud a driller pumps five barrels of 11 ppg mude into the 4-1/2 inch 16.6lbf/ft drill pipe (its called a pill).Drill pipe I.D .is 3.826 in. With capacity of 0.0142bll/ft. If the well is kept full of 9ppg mud l..
the exhaust from a natural gas heating is expelling combustion products at a rate of 10 mole per minute. on a mass
at room temperature 23oc a cylinder of steel has a diameter of 15.02 mm which is too large to fit into a 15 mm diameter
Using Rent's Rule with C = 3.8 and m = 0.43, how many input/output terminals (pins) will be needed for each chip package?
an egg can be approximated as a 5.5cm diameter sphere. the egg is initially at a uniform temperature of 8c and is
She asserts that the problems must be due to poor operational procedures. A newspaper approaches you for your opinion. Discuss how you should handle such an interview.
in an archery test the acceleration of the arrow decreases linearly with distance s from its initial value of 16000
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