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The Hot Shots Beverage Co. has developed a self-heating alcoholic beverage, the Winter Warmer. To test the effectiveness of the exothermic reaction that heats the drink the maximum temperature reached during the heating of a random sample of 15 Winter Warmers was measured. The mean temperature of this sample was 47° Celsius. The population standard deviation of the maximum temperatures reached during this process is known to be 3.2° Celsius. According to the product specifications, the mean maximum temperature reached should be no more than 45° Celsius. Formulate the latter as a null hypothesis and test it using a 1% level of significance.
Write a program to solve Problem 6.74 with the thermal storage rock bed in Problem 5.60. Let the size and temperatures be input variables so that the heat engine work output can be studied as a function of the system parameters.
Determine the force in member DG of the compound truss. The joints all lie on radial lines subtending angles of 15° as indicated, and the curved members act as two-force members.
Three pipes in a parallelsystem run between points A & B on a water distribution network delivering 400L/s. Pipe 1 is a 350 mm PVC main 4000 m long, Pipe 2 is a concrete pipe 250 m long and 80 mm in diameter
How far apart must two 18 , diameter tanks be placed such that their stress overlap is not greaer than 10% of the contact stress at depths of 10, 20, and 30 m
If the defect rate for the flash drivers is 0.5% and you randomly select four of them for inspection: a) What is the probability that none of them has a defect b) What is the probability that all four have a defect
A direct shear cell 25.4cm x 25.4 cm in plan is filled with dry sand. a normal load of 6kN is applied to the sample, and the shear failure is 3.5kN. What is the anle of internal friction for the sand?
Calculate the depth h of mud for which the 3m concrete retaining wall is on the verge of tipping about its forward edge A. the density of mud may be taken to be 1760 kg/m3 and that of concrete to be 2400 kg/m3.
The viscosity of a fluid can be measured in an experiment by dropping a small ball into a calibrated tube containing the fluid and observing the random variable X, the time it takes for the ball to drop the measured distance. Assume that X is normall..
A 1-m3 insulated, rigid tank contains air at 800 kPa, 25?C. A valve on the tank is opened, and the pressure inside quickly drops to 150 kPa, at which point the valve is closed. Assuming that the air remaining inside has undergone reversible adiaba..
A weight W somewhere between 1 to 10 tons is randomly placed along a beam of 10m long span. Let X denote the distance from the point of applicatoin of the load to the nearest support.
Assume that the service station must fill refill the tank with 4.00 m^3 of gasoline once a week.Draw a mass balance diagram and estimate the annual loss of gasoline vapor (in kg/y) for the splash fill method
A 2-ft diameter circular pipe has a Manning's n of 0.013 and a bed slope of 2.0 X 10^-3. What is the uniform flow rate in this pipe if it is completely full (Qf) in ft^3/s
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