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The energy required to shear a 1-in. round bar is approximately 1000 ft-lb. In use, the shearing machine is expected to make a maximum of 40 cutting strokes a minute. The frictional losses should not exceed 15 % of the motor output. The shaft carrying the flywheel is to average 150 rpm. (a) What motor horsepower is required? (b) Assuming a size of flywheel and choosing appropriate C f, find the mass and sectional dimensions of the rim of a cast-iron flywheel. The width of the rim is to equal the depth and is not to exceed 3 1⁄2 in. It would be safe to assume that all the work of shearing is supplied by the kinetic energy given up by the flywheel.
A study is conducted to test a new drug claimed to reduce diastolic blood pressure in adults with a history of coronary heart disease. What is the most efficient study to test whether the drug reduces diastolic blood pressure? Justify your answer.
a regression line for a data set was found to be yt 1.25 - 3.84x . what is the point prediction of y for x 20?a.
To summarize the data, compute the proportion of all students, the proportion of all male students, and the proportion of all female students
Assuming that the player is holding the bat tightly at one end which is not moving, determine the natural frequency of the first mode.
a. Explain how you know that some topics must overlap. b. What could be the minimum percentage of stories that were about both sex and drugs?
Use a double-subscripted array to solve the following problem. A company has four salespeople (1 to 4) who sell five different products (1 to 5).
The length of a guest lecturer's talk represents the third quartile for talks in a guest lecture series. Make an observation about the length of the talk.
predicting winning percentage for the nflthe national football league nfl records a variety of performance data for
Develop a model to predict the selling price of homes based on assessed value
You perform a one sample mean hypothesis test on a random sample of data and observe a p-value of 0.2157. What is the appropriate conclusion? Conclude at the 5% level of significance.
Which of the following assumptions is not made for the F-test for comparing three or more means?
Consider the probability distribution shown below. x 0 1 2 P(x) 0.05 0.20 0.75. Compute the expected value of the distribution. (Enter a number.)
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