Vector V1 is (5i + 7j - 3k) and vector V2 is (7i + 2 j + 14k). The component of V1 parallel to the line of action of vector V2 is:
(A) -0.25i + 0.12j + 0.43k
(B) 0.20i + 0.06j + 0.39k
(C) -0.20i + 0.22j + 0.39k
(D) -0.35i + 0.02j + 0.13k
(B) 0.20i + 0.06j + 0.39k
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Two single charged ions moving perpendicularly to a uniform magnetic field (B = 0.40 T) with speeds of 5 000 km/s follow circular paths that differ in diameter by 5.0 cm. What is the difference in the mass of these two ions?
a. 2.6 × 10^-28 kg b. 6.4 × 10^-28 kg c. 3.2 × 10^-28 kg d. 5.1 × 10^-28 kg e. 1.1 × 10^-28 kg
A wave travels an average distance of 1 m in 1 s with a frequency of 1 Hz. Its amplitude is
A) less than 1 m. B) 1 m. C) more than 1 m. D) not enough information
What unusual discovery was made about the Murchison Meteorite?
A) It is from Mars. B) It contains iron. C) It contains living cells. D) It contains amino acids. E) It is the largest known meteorite.
A block that has a density of 900 kg/m3 is placed in water (density 1000 kg/m3). The block will
A. sink until it is almost, but not entirely, submerged. B. sink just a little bit with most of the block above the water. C. sink until it is entirely submerged and then remain in place just below the surface. D. sink to the bottom. E. rest on the water with none of the block submerged.