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A 60-kg man used to have an apple every day after dinner without losing or gaining any weight. He now eats a 200-ml serving of ice cream instead of an apple and walks 20 min every day. On this new diet, how much weight will he lose or gain per month?
The air pollution emission rate E in a parking lot may be approximately by the step function shown in figure E10.5. Assuming a constant airflow F and zero initial pollutant concentration, plot the C as a function of time.
An elbow, 90 degrees smooth bend flanged, is used in the Alaskan pipeline. Inside pipe diameter is 48 inches. Flow is 1.6 million barrels a day. 1 barrel=42 gal. Velocity is 8.27 ft/s. SG=0.93
Some experiments are being conducted in a laboratory in which theair temperature is 26o C and the atmosphericpressure is 14.6 psia. Determine the density of the air.Express your answers in slugs/ft3 andkg/m3.
A plume of bromoform dissolved in grounwater originates from two storage ponds with a total length of 150 m. The ponds penetrate the unconfined aquifer to a depth of 5 m.
You borrow $1000 and pay off the loan with interest after 4.5 years. The amount paid is $1500. What is the effective annual interest rate for this loan. Use a 6 month interest period.
Find the maximum production rate of B in moles per minute and the optimum for (a) a plug flow reactor (b) a mixed flow reactor Find the production rate of B in moles per minute for (c) a mixed flow reactor with V = 100 m3
two wooden members of uniform rectangular cross section of sides a = 100 mm and b = 60 mm are joined by a simple glued joint as shown. knowing that the ultimate stress of the joint are 1.26 MPa in tension and 1.50 MPA in shear and that P= 6kN
If the average length of a vehicle is 15 ft and the average space between consecutive vehicles waiting to be served is 3 ft, what is the minimum length for the off-ramp to provide storage for all exiting vehicles 80 percent of the time
A hypothetical A-B alloy of composition 40 wt%B-60 wt%A at sometemperature is found to consist of mass fractions of 0.66 and 0.34for the αand β phases, respectively. If the composition of the α phase is 13 wt% B-87 wt% A, what is the composition ofth..
Why is the ‘time value of money' important for the evaluation of engineering projects? Provide at least one practical example to support your view (max 2 pages)
Given a type of material used in a wire with diameter (d = 0.25 in) that stretches 2.3 inches while 80 feet of length is under tensile load of 1800 pounds. Find the elastic modulus of the material used to construct the wire.
A new concrete mix is being designed to provide adequate compressive strength for concrete blocks. The specification for a particular application calls for the blocks to have a mean compressive strength greater than 1350 kPa.
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