To reduce cracking during welding of aluminum:
A) Choose smaller continuous welds rather than intermittent welds
B) Fill craters when ending weld
C) Choose a filler metal with a very different chemistry
D) All of the above
D
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When applying a mating surface constraint, you are forcing the normals of the two surfaces to be ____ to each other.
A. perpendicular B. parallel C. opposite D. equivalent
Mr. Fields owns and operates a farm. His net earnings from selfemployment were $56,800. He is required to file Schedule SE (social security tax) with his income tax. He paid $2,200 each quarter on his estimated taxes to cover the social security tax. The social security tax rate is 15.3 percent.
a. What was the amount of the social security tax? b. What was the amount of estimated social security tax paid for the year? c. What was the difference between the estimated tax and the actual tax using a positive or negative number?
Earthworms generally are most abundant in sandy, acid soils typically under coniferous forest vegetation
Indicate whether the statement is true or false
The greatest advantage of the carburizing process is that:
A) Low carbon steels can be made very hard on the surface only, while the core remains soft and tough B) A case hardened part can remain as hard as Rc60 all the way through without the need for tempering and still be just as hard as a similar tempered part C) Surface hardening can be done on any ferrous metal that contains sufficient carbon. Induction heating and flame hardening are two methods used. Lathe ways and gears are examples D) It makes possible the hardening of thicker sections completely through while using an oil quench to avoid distortion