The apparent displacement in the direction of light coming from a star because of Earth's orbital motion is called the ______________
Fill in the blank(s) with correct word
aberration of starlight
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Consider the situation below. Object A is a metal sphere with zero net charge, and objects B and C are particles with the same negative charge. Which choice shown to the right best indicates the direction of the electric field at point P? (If you are using the letters on the back cover to indicate your answer, you can indicate the double-letter choices by pointing to a letter with two fingers.)
A. A
B. B
C. C
D. D
E. Zero
F. AA
G. BB
H. CC
I. DD
On a scale in which the distance from Earth to the Sun is about 15 meters, the distance from Earth to the Moon is ________
A) about 30 meters B) small enough to fit within your hand C) about 1 meter D) about 5 meters
Which of these is not a form of solar energy?
A) wind energy B) fossil fuel energy C) geothermal energy D) hydroelectric power
A monochromatic light beam is incident on the surface of a metal having a work function of 2.50 eV. If a 1.0-V stopping potential is required to make the electron current zero,
what is the wavelength of light? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 355 nm B) 423 nm C) 497 nm D) 744 nm