What is the radius of a sphere that has a density 5000 kg/m3 and a mass 6.00 kg?
A)
4.98 cm
B)
1.27 m
C)
6.59 cm
D)
1.56 m
E)
7.22 cm
C
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Vector V1 is (5i + 7j - 3k), vector V2 is (7i + 2j + 14k), and vector V3 is (i - 2j + 5k). The scalar triple productV1*( V2 x V3) is:
(A) -91 (B) 82 (C) 56 (D) 91
Special relativity predicts that light bends near dense objects
Indicate whether the statement is true or false
Which of the following would decrease the magnification of a compound microscope?
a. Replacing the objective lens with one of larger diameter. b. Replacing the eyepiece lens with one of shorter focal length. c. Replacing the eyepiece lens with one of smaller diameter. d. Replacing the objective lens with one of longer focal length.
How is it possible that today's diverse universe was able to arise from that which was very homogeneous at its first moments?
A) Inflation magnified ultrasmall quantum variations in position and momenta. B) There is evidence of a second, slightly smaller Big Bang that took place very shortly after the initial Big Bang, which would account for the variation in structure. C) The rapidly cooling universe created massive quantities of hydrogen, and then helium, which interacted with each other to create regions of relative structure. D) Entropy immediately came into effect, slowing down some areas of expansion, while increasing others.