What happens to water as it is heated?
a. Its density increases.
b. Its density decreases.
c. Its density remains the same.
d. It absorbs air.
b. Its density decreases.
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A metallurgist is designing an experiment to determine the effect of flux, base metal, and energy input on the hardness of a weld. She wants to study four different fluxes, two different base metals, and three different amounts of energy input. If each run of the experiment involves a choice of one flux, one base metal, and one amount of energy input, how many different runs are possible?
What will be an ideal response?
Which breed of cattle is most popular in Europe?
a. Murray Grey c. Longhorn b. South Devon d. Simmental
The primary goal of the NFPA is "to promote the science and improve the methods of electrical wiring."
Answer the following statement true (T) or false (F)
The electrical path to ground may be completed by ________
A) The metal body of the vehicle B) The vehicle frame C) Both A and B D) Neither A nor B