One hundred milliliters of water is poured into a U-tube that has a cross-sectional area of 1 cm2 . Then 100 milliliters of oil, with a density 80% that of water, is poured down one side of the U-tube so that the oil floats on the water. Find the difference in height of the liquid surfaces on the two sides of the U-tube
20 cm
Physics & Space Science
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Convergent boundaries are areas of
A) compressional forces that crunch the crust and generate a spreading center. B) tensional forces that stretch the crust and generate a spreading center. C) crustal formation. D) plate collision.
Physics & Space Science
Series/Parallel Circuits: If V = 40 V and the battery is ideal, what is the potential difference across R1 in the figure?
A. 6.7 V B. 8.0 V C. 10 V D. 20 V
Physics & Space Science
The sound of a bird singing is given as 5 dB. What is the intensity of the sound of a bird singing?
a. 
b. 
c. 
d. 
e. 
Physics & Space Science
Radio waves have ________ wavelength and ________ frequency relative to visible light.
A. shorter; larger B. longer; smaller C. longer; larger D. shorter; smaller
Physics & Space Science