Compute isentropic efficiency of turbine and mass flow rate
A turbine produces 2 MW of power while accepting steam at 3 MPa and 400 C and rejecting steam at 50 kPa and 100C. Find (a) the isentropic efficiency of the turbine (assume no heat transfer) (b) the mass flow rate of steam.
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Assume the barrel is initially at rest and that its moment of inertia can be approximated as a hollow cylinder rotating about its axis: Icylinder=MR2. Your answer should be given to a tenth of a m/s.
Let A, B, and C be independent random variables, uniformly distributed over [0,7 ], [0,8], and [0,3] respectively. What is the probability that both roots of the equation Ax^2 + Bx + C = 0 are real?
Suppose that LilyMac Photography has annual sales of $234,000, cost of goods sold of $169,000, average inventories of $4,900, average accounts receivable of $25,800, and an average accounts payable balance of $7,400.
By studying the grade distributions in calculus over several years, it was determined that the probability of a student obtaining an A is 0.213 (that is 21.3% are expected to get A's), a B is 0.242, a C is 0.226, a D is 0.100
A turbine produces 2 MW of power while accepting steam at 3 MPa and 400 C and rejecting steam at 50 kPa and 100C.
Suppose that LilyMac Photography has annual sales of $234,000, cost of goods sold of $169,000, average inventories of $4,900, and average accounts receivable of $25,400. Assume that all of LilyMac's sales are on credit.
A random sample of 200 observations shows that there are 36 sucessess. Can we conclude at the 1% level of significance that the true proportion of successes in the population is less than 24%?
Dabble, Inc., has sales of $972,000 and cost of goods sold of $467,000. The firm had a beginning inventory of $32,000 and an ending inventory of $42,000.
If you instead wished to test whether the average Valentine's Day expenditure for males was more than $20 higher than that for females, how would that change your analysis?
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