The processes responsible for virtually all surface geology are ________
A) accretion, differentiation, and radioactive decay
B) impact cratering, volcanisms, tectonics, and erosion
C) convection, conduction, and radiation
D) eruptions, lava flows, and outgassing
B
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A hydraulic press multiplies a force by 100, which is compensated by
A) energy, which is divided by 100. B) the lesser distance through which the force acts. C) the time through which the force acts. D) the mechanism providing the force. E) none of the above
The current-versus-voltage behavior of a certain electrical device is shown in Figure OQ27.3. When the potential difference across the device is 2 V, what is its resistance?
Thermal Expansion: The coefficient of linear expansion of copper is 17 × 10-6 K-1. A sheet of copper has a round hole with a radius of 3.0 m cut out of it. If the sheet is heated and undergoes a change in temperature of 80 K, what is the change in the radius of the hole?
A. It decreases by 4.1 mm. B. It increases by 4.1 mm. C. It decreases by 8.2 mm. D. It increases by 8.2 mm. E. It does not change.
Eleven molecules have speeds 16, 17, 18, . . . , 26 m/s. Calculate the root-mean-square of this group of molecules
A) 21.2 m/s B) 21.0 m/s C) 21.5 m/s D) 21.7 m/s