The domestic dog was domesticated from ancestors of today's:
a. gray wolf c. Arctic wolf
b. European wolf d. coyote
A
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When solving for the vapor-liquid equilibrium of a binary mixture at a given temperature and liquid-phase composition using an equation of state (phi-phi method), the number of equations (and unknowns) are:
A. 1 B. 2 C. 3 D. 4 E. 7
Jack Jones went into a sow/pig operation. Hebuilt a building 40 feet wide and 100 feet long. The rafters for the roof are made from 2X6s placed on a 24-inch center with a 1:5 slope.
a. How many square feet are in the building? b. How high is the roof to the ridge cap? c. What angle does the roof make with the horizontal? d. What length 2X6s was purchased for the rafters? (Note: 2X6s are sold in even-number lengths.) e. How many board feet (1 foot by 1 foot by 1inch or less) are in the rafters?
In humid regions repeat applications of limestone are needed after a few years primarily because of:
A) increased rates of formation of carbonic acid (H2CO3). B) the release of aluminum ions from the structure of silicate clays. C) increases in phosphate fertilization. D) the annual loss of calcium and magnesium in drainage waters. E) increases in soil acidity from acid rain.
If the time for one cycle is 0.1 second, the frequency is _____
a. 0.1 Hz b. 0.5 Hz c. 1 Hz d. 10 Hz