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i. Explain what an S-N curve is, including a sketch. How is such a curve typically determined in the laboratory?
ii. Explain what is meant by the terms endurance limit and fatigue limit.iii. Fatigue testing of metals is often conducted at a constant R ratio. Define the R ratio for a fatigue test.Commercially pure titanium alloy with an ultimate tensile strength of 650 MPa is tested at an R ratio of 0.1. The endurance limit at 107 cycles is found to be 180 MPa.
i. Calculate the mean stress in a fatigue test with a stress amplitude of 180 MPa and an R ratio of 0.1.ii. Use the Goodman equation to calculate the endurance limit at a mean stress of 0 MPa for this alloy.
Explain in a couple of well written sentences which industry in the U.S. would benefit in the short run from putting a tariff on all Japanese autos,
When the price of a box of herbal tea bags rises from $0.99 to $1.21, the quantity offered for sale rises from 400,000 to 600,000. What is the price elasticity of supply? 2. When the price of wheat rises from $2.34 to $2.46, some farmers switch cr..
Explain all opportunity cost that you consider when deciding whether to purchase tickets for and attend a concert for 3 hours in Boston on a Saturday night.
Illustrate what are the effects on American wages and purchasing power of the continued outsourcing of labor overseas. What are some of the reasons for these trends.
In an effort to estimate the mean amount spent per customer for dinner at an Atlanta restaurant, data were collected for a sample of 42 customers. The data collected resulted in a sample mean of $29. Based upon past studies the population standard..
Carson Company is attempting to compare their services offered by different banks as it would like to have all services provided by one bank. Explain the different types of services provided by a financial institution that may allow Carson Company..
The Dade Corporation is borrowing $300,000 for one year and paying $27,000 in interest to Miami National Bank. The Bank Requires a 20% compensating balance.
Question based on Derive and compare demand curve, Derive Ambrose's demand function for peanuts. How does it compare with Johnny's demand curve for peanuts?
Describe the industry equilibrium price/output combination both graphically and algebraically. Calculate the level of excess supply (unemployment) if the minimum wage is set at $7 per hour.
Is the GDP measure underestimating or overestimating national production and total income in the economy? Why? What are the impacts of the shortcomings of the GDP as a measure of the national product and national welfare.
Groups need to choose a topic from the list of topics provided by the lecturer and write an essay on the chosen topic. (This list is placed under additional readings on your BB)
The National Debt Try the following exercises to better understand how the national debt is related to the government's budget deficit Assume that the gross national debt is initially equal to $3 trillion and the federal government then runs a defic..
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