Which of the following is a native of North America?
a. true yams c. Jerusalem artichoke
b. turnip d. cassava
C
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The voltage needed to produce 1.5 amps of current in a 75 ? resistor is:?
A. ?0.0089 V B. ?0.02 V C. ?50 V D. ?112.5 V
What type of display is designed to stop traffic and focus attention?
a. Life event c. Seasonal b. Artistic d. None of the above
Manure dropped directly into a stream can carry nitrates and _____________________ miles from the source
Fill in the blank(s) with correct word
The shape of a bacterium can be approximated by a cylinder of radius r and height h capped on each end by a hemisphere. The volume and surface area of the bacterium are given by
It is known that the rate R at which a chemical is absorbed into the bacterium is R = c(S/V), where c is a constant of proportionality. Assume that for a certain bacterium, r = 0.9 ± 0.1 ????m and h = 1.7 ± 0.1 ????m.
a. Are the computed values of S and V independent? Explain.
b. Assuming the measurements of r and h to be independent, estimate R and find the uncertainty in the estimate. Your answer will be in terms of c.