Tar sand and oil shale extractions are energy and cost efficient processes
Indicate whether the statement is true or false.
F
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A reinforced masonry wall is built like a cavity wall with an air space between the wythes.
Answer the following statement true (T) or false (F)
Concrete blocks are produced in lots of 2000. Each block has probability 0.85 of meeting a strength specification. The blocks are independent.
a. What is the probability that, in a given lot, fewer than 1690 blocks meet the specification? b. Find the 70th percentile of the number of blocks that meet the specification. c. In a group of six lots, what is the probability that fewer than 1690 blocks meet the specification in three or more of them?
According to Ohm’s law, __________.
a. voltage = current/resistance b. current = voltage/resistance c. voltage = resistance/current d. resistance = current ? voltage
Which tier of emission standards is the least stringent?
A) Tier 2 B) Tier 3 C) Tier 1 D) None of these