A 3/4-6 ACME threaded screw is used to lift a 2 kN load. Note that this has a pitch of 1/6. The mean collar diameter is 4 cm. Find the torque to lift and to lower the load using a ball-bearing thrust washer. What are the efficiencies? Is it self locking? You will need to look up ACME thread size standards online for this problem
In: Mechanical Engineering
A trapezoidal tough is 10 ft long, 4 ft wide at the top, 2 ft wide at the bottom and 2 ft deep. If water flows in the 10 ft^3/ min, find how fast the surface is rising, when the water is 6 in deep. How fast the water surface is rising when the water is 1 foot deep.
In: Math
The formation constant* of [M(CN)4]2– is 7.70 × 1016, where M is a generic metal. A 0.140-mole quantity of M(NO3)2 is added to a liter of 0.890 M NaCN solution. What is the concentration of M2 ions at equilibrium?
In: Chemistry
4. Name 2 sources of systematic error and random error
5. The 2sd random error in this scenario is 10%.
a. What is your total allowable error (TAE) If the TAE for the analyte you are investigating is 12% (per CAP),
b. your TAE acceptable? Why or why not?
6. Dr. X informs you that the values for the test in question are most discrepant at higher concentrations. You decide to perform a linearity on your test method. Describe how that is done and what information that will give you.
7. The linearity turns out to be most discrepant at higher values, so you decide to look at other method comparison statistics. If the T value is 3.0898, is your method statistically different from the neighboring lab? Why or why not?
8. Is Dr. X worried too much about his patient values at the high end? What will you tell Dr. X? What questions will you have for the manufacturer?
In: Statistics and Probability
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Suppose rRF = 4%, rM = 11%, and bi = 1.5. 2. Now suppose rRF decreases to 3%. The slope of the SML remains constant. How would this affect rM and ri? -Select-IIIIIIIVV
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In: Finance
Consider the data set. 2, 4, 6, 8, 9
(a) Find the range. (Enter an exact number.)
(b) Use the defining formula to compute the sample standard deviation s. (Enter a number. Round your answer to two decimal places.)
(c) Use the defining formula to compute the population standard deviation σ. (Enter a number. Round your answer to two decimal places.)
In: Statistics and Probability
Consider the data set. 2, 4, 6, 8, 9
(a) Find the range. (Enter an exact number.)
(b) Use the defining formula to compute the sample standard deviation s. (Enter a number. Round your answer to two decimal places.)
(c) Use the defining formula to compute the population standard deviation σ. (Enter a number. Round your answer to two decimal places.)
In: Statistics and Probability
Institutional/Policy responses of African States to the SARS-CoV-2 pandemic
Target (4 Pages )
In: Biology
In a recent high-profile court case from the past 4 years, what are 2 factors of the trial that could prevent the defendant from receiving a fair trial?
In: Finance
2. Discuss 4 characteristics of services that distinguish them from products. Illustrate each with a marketing example. 3. What does relationship marketing in services involve. Illustrate with a marketing example. 4. What do we mean by internal marketing in services?
In: Finance