1. a barleycorn is an english unit of length equal to 1/3 of an inch. what is the height of the empire state building (449 m) expressed in barleycorn? (2.54 cm = 1 in)
a. 3 × 105 barleycorn b. 6 × 103 barleycorn c. 5 × 104 barleycorn d. 4 × 104 barleycorn e. 6 × 10–1 barleycorn

449 m = 44900 cm

if          2.54 cm = 1 in

then 44900 cm = X in

X = (44900×1)/2.54 = 17677 in  

if       1 barleycorn = 1/3 in

then Y barleycorn = 17677 in

Y = (17677×1)/(1/3) = 17677×3 = 53031 ≅ 5× barleycorns

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

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