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Life expectancy. Table 6 shows the life expectancy (in years) at birth for residents of the United States from 1970 to 2005. Let x represent years since 1970. Find an exponential regression model for this data and use it to estimate the life expectancy for a person born in 2015.
1. Determine the net electric power produced by the fuel cell-fan system, Pnet = P - Pf .
Determine the total mass of nitrogen (N2), in kg, required to inflate all four tires of a vehicle, each to a gage pressure of 180 kPa at a temperature of 25oC. The volume of each tire is 0.6 m^3, and the atmospheric pressure is 1 atm.
the sun is approximated as a spherical black body with a surface temperature of 5762 k. the irradiation from the sun as
Determine the total induction length, from the point of intake entry of the tract to the head of the inlet valve, to optimize the wave ram effect at the following engine speeds:
the data below give steady state creep rates dedt for a metal alloy as a function of temperature and stress.temp
feedwater at 4000 kpa is heated at a rate of 6 kgs from 200degc to 245degc in a closed feedwater heater of a
assuming cold air standard assumptions for a spark ignition engine cycle otto and given the following data compression
Estimate the heat loss per unit length if a 50-mm-thick layer of insulation (magnesia with k = 0.058 W/m-K) is added. The steel and magnesia may each be assumed to have an emissivity of 0.8, and the steam-side convection resistance may be neglecte..
standard atmospheric air at stagnation conditions t0 59 degree f p0 14.7 psia is drawn steadily through a
fluid is flowing horizontally at 100gpm from a 2in diameter pipe to a 1in diameter pipe. if the pressure is 10 psi at
sketch a p-v diagram for a substance that contracts on freezing which includes all three phases with the triple line
Rotation of bar OA is controlled by the lead screw which imparts a horizontal velocity v to collar C and causes pin P to travel along the smooth slot. Determine the values of r dot and theta dot, where r = OP, if h = 160mm, x= 120mm and v = 25 mm/s a..
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