Hypothetically, if Planck's constant were smaller, atoms would be
A) larger.
B) smaller.
C) no different in physical size.
Answer: B
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The ratio of the light-gathering power of Reflecting Telescope 1 with a primary mirror of diameter 1.6 m to Reflecting Telescope 2 with a primary mirror of diameter 0.008 m is ____
A) 40 to 1 B) 400 to 1 C) 4000 to 1 D) 40,000 to 1
What is the name of the path on the celestial sphere that goes through the constellations of the zodiac?
A) the celestial equator B) the ecliptic C) the Milky Way D) the meridian E) the horizon
A planetary nebula
a. produces an absorption spectrum. b. produces an emission spectrum. c. is contracting to form planets. d. is contracting to form a star. e. is the result of carbon detonation in a 1 Mo star.
A transverse periodic wave is represented by the equation z(y, t) = 1.50 cm sin(1,250 rad/s t + 10.0
y). What is the frequency of the vibration of the wave?
A. 319 Hz B. 289 Hz C. 240 Hz D. 199 Hz E. 150 Hz