As shown in the figure, a container has a vertical tube, whose inner radius is 32.00 mm, connected to it at its side
An unknown liquid reaches level A in the container and level B in the tube—level A being 5.0 cm higher than level B. The liquid supports a 20.0-cm high column of oil, between levels B and C, whose density is 460 kg/m3. What is the density of the unknown liquid?
A) 1800 kg/m3
B) 2000 kg/m3
C) 1400 kg/m3
D) 1600 kg/m3
E) 1700 kg/m3
Answer: A
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A convex lens has focal length f. An object is placed at 2f on the axis. The image formed is located
A) between 2f and infinity. B) at 2f. C) between f and 2f. D) at f.
A temperature of 0 Kelvin means there is essentially no motion at the atomic level.
Answer the following statement true (T) or false (F)
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