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Two uninsulated, rigid tanks contain air. Initially, tank A holds 1 lbm of air at 1440°R, and tank B has 2 lbm of air at 900°R. The initial pressure in each tank is 50 psi. A valve in the line connecting the two tanks is opened and the contents are allowed to mix. Eventually, the contents of the tanks come to equilibrium at the temperature of the surroundings, 520°R. Determine the amount of energy transfer by heat, in Btu, and the final pressure, in psi.
problem 1.the drunken professor has a class of 34 students. he wants to divide them into seventeen pairs of partners
Can the value 0.64 be rejected if a survey of 495 homes in Omaha yields 332 with one or more lawn mowers? Use = 0.05.
these cars would fall into the 22 to 27 mpg range? Compute the proportion of cars that get more than 28 mpg. What proportion of cars would get less than 23 mpg?
what is the method to prove a cumulative distribution function of frechet distribution?complete
Assume the least squares equation is Y' = 10 + 20X. What does the value of 20 indicate?
Find a 90% confidence interval on the difference in the mean number of production units for the two shifts.
planwell corporation is considering whether to build a large plant or a small plant for new product which has an
Recognize independent variable and dependent variable for this experiment. Think in your head what influences what? Or, what causes what? Cause is independent variable.
question out of forty students there are 14 who are taking physics and 29 who are taking calculus. what is the
Suppose a botanist grows many individually potted eggplants, all treated identically and arranged in groups of four pots on the greenhouse bench.
In a random sample of 120 households, what is the probability that greater than 20 households, but, less than 35 households receive a retirement income?
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
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