The twelve constellations the solar system bodies move through are the
A) galactic equator.
B) nodes of the ecliptic.
C) equatorial constellations.
D) stages of heaven.
E) signs of the zodiac.
E
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Which of the following materials has the highest dielectric constant?
a. air b. Mylar c. paper d. Pyrex glass e. water
If the wave function for a free electron is given by ? = A sin kx + B cos kx, and the electron has a speed of 5.2 x 106 m/s, what is the value for k?
A) 1.9 x 10-7 m-1 m-1 B) 1.2 x 10-6 m-1 C) 7.2 x 109 m-1 D) 4.5 x 1010 m-1 E) 3.8 x 1011 m-1
A beam of light P has twice the wavelength but the same intensity as beam Q. The number of photons that hit a given area in a given time when it is illuminated by beam P is (A) twice, (B) the same, or (C) one-half of the number that hit when the area is illuminated by beam Q?
A. Twice B. The Same C. One-half of the number that hit
Two children start at one end of a street, the origin, run to the other end, then head back. On the way back Joan is ahead of Mike. Which statement is correct about the distances run and the displacements from the origin?
a. Joan has run a greater distance and her displacement is greater than Mike's. b. Mike has run a greater distance and his displacement is greater than Joan's. c. Joan has run a greater distance, but her displacement is less than Mike's. d. Mike has run a greater distance, but his displacement is less than Joan's. e. Mike has run a shorter distance, and his displacement is less than Joan's.