Which of the following scientists is generally designated "the father of geology"?
a. Friedrich Mohs
b. James Hutton
c. Alfred Wegener
d. Edwin Hubble
b
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Why is the Moon's surface cratered but Earth's is not?
A. When the dinosaurs died, their remains filled all Earth's craters. B. The Moon's stronger magnetic field attracted more iron asteroids. C. Meteors bounce off Earth's atmosphere. D. Earth's impact craters have been mostly obliterated by erosion and plate tectonics.
By what factor is the total pressure greater at a depth of 900 m in water than at the surface where pressure is one atmosphere? (water density = 1.0 × 10^3 kg/m3, 1 atmosphere pressure = 1.01 × 10^5 N/m2, and g = 9.8 m/s2)
a. 8.9 b. 88 c. 98 d. 78 e. 8 800
A particle confined in a rigid one-dimensional box (an infinite well) of length 17.0 fm has an energy level En = 24.0 MeV and an adjacent energy level En+1 = 37.5 MeV
What is the value of the ground state energy? (1 eV = 1.60 × 10-19 J) A) 1.50 MeV B) 13.5 MeV C) 0.500 MeV D) 4.50 MeV
The person who first explained the photoelectric effect was
a. Max Planck b. Albert Einstein c. Neils Bohr d. Erwin Schroedinger e. Werner Heisenberg