Giant molecular cloud complexes are located in spiral arms
Indicate whether the statement is true or false
T
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A circular aluminum tube of length L 5 650 mm is loaded in com-pression by forces P. The outside and inside diameters are 80 mm and 68 mm, respectively. A strain gage on the outside of the bar records a nor-mal strain in the longitudinal direction of 400 3 1026. The shortening of the bar is approximately:
(A) 0.12 mm
(B) 0.26 mm
(C) 0.36 mm
(D) 0.52 mm
Based on current understanding, the minimum mass of a black hole that forms during a massive star supernova is roughly
A) 0.5 solar masses. B) 1.4 solar masses. C) 3 solar masses. D) 10 solar masses.
An atomizer works because of
a. Archimedes' principle. b. Pascal's principle. c. Bernoulli's principle. d. Torricelli's principle. e. none of these principles.
A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.49). If the velocity of the beam before it enters the plastic is 3.00 × 10^8 m/s, what is its velocity inside the block?
a. 3.00E+8 m/s b. 1.35E+8 m/s c. 2.01E+8 m/s d. 2.46E+8 m/s e. 1.53E+8 m/s