Holes in the other side member of a joint for plug welding are indicated by placing the weld symbol ____ the reference line.
A. above and below
B. next to
C. below
D. above
Answer: D
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Optimal conditions for the growth of yeasts are similar to those of molds
Indicate whether the statement is true or false
If a source says “the internal energy of the methane is U = 100 J/mol,” which of the following is true?
A. In order to lower the temperature of the methane to absolute zero, you would have to remove 100 joules of heat from each mole of methane. B. In order to convert the methane from its current state to the reference state, 100 joules of heat would need to be added to each mole of methane. C. In order to convert the methane from its current state to the reference state, 100 moles of energy would need to be added to each mole of methane, but the energy added could take the form of either work or heat. D. 100 joules, divided by the number of molecules in one mole, equals the average kinetic energy of the methane molecules, but the kinetic energy of individual molecules vary widely. E. None of the above are true.
Find a 95% confidence interval for the mean difference in time to freeze-up between the first month and the seventh.
A computer system administrator notices that computers running a particular operating system seem to freeze up more often as the installation of the operating system ages. She measures the time (in minutes) before freeze-up for seven computers one month after installation, and for nine computers seven months after installation. The results are as follows: One month after install: 207.4 233.1 215.9 235.1 225.6 244.4 245.3 Seven months after install: 84.3 53.2 127.3 201.3 174.2 246.2 149.4 156.4 103.3
What three specifications help determine whether or not a particular meter is appropriate for a particular use?
A) Case, max reading, and display B) Range, resolution, and accuracy C) Max volts, max amps, and max resistance D) Switch positions, display, and case