In 1808 a scientist named ____ proposed that all matter was composed of atoms.
a. J. J. Thompson
b. Niels Bohr
c. Isaac Newton
d. John Dalton
d. John Dalton
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Even after an unsupported masonry wall has been temporarily braced, workers must be evacuated from the immediate work area if wind speeds exceed _____.
a. 45 miles per hour b. 40 miles per hour c. 35 miles per hour d. 30 miles per hour
?If a nut turns easily for a few threads on a bolt and then begins to turn hard, what could be the problem?
What will be an ideal response?
Opium poppy is grown for which plant parts?
a. sap and seeds c. seeds only b. sap, seeds, and roots d. sap only
An assembly line robot arm with a first cost of $75,000 in 2001 had a cost of $89,750 in 2017. If the equipment cost index for robots was 307 in 1995 and the robot cost increased exactly in proportion to the index, the value of the index in 2017 was closest to: (choose one)
(a) 367 (b) 395 (c) 437 (d) 4