What is the dominant feature of the lunar surface?
a. mountains
b. rilles
c. craters
d. lobate scarps
e. lava tubes
c
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A 4.00 kg object is moving at 3.00 m/s WEST. It strikes a 6.00 kg that is moving WEST at 2.00 m/s. The objects have a one-dimensional elastic collision in the EAST-WEST direction. The velocity of the 4.00 kg object after the collision is
A. 1.00 m/s WEST. B. 2.80 m/s EAST. C. 1.80 m/s WEST. D. 2.80 m/s WEST. E. 1.80 m/s EAST.
In a Voigt solid with an elastic modulus of 1 GPa, if a stress of 1 MPa is applied for a long time and then removed for a long time, the total strain is equal to _________.
Fill in the blank(s) with the appropriate word(s).
A copper sphere, 10 cm in diameter, is subjected to a pressure of 1.0 × 106 N/m2. What is the change in the diameter of the sphere? The bulk modulus for copper is 1.4 × 1010 N/m2
A) 2.2 × 10-6 m B) 2.2 × 10-7 m C) 7.1 × 10-6 m D) 7.1 × 10-7 m E) 7.1 × 10-8 m
The most noteworthy event that occurred during the Pleistocene was the
A) emergence of the early humans. B) ice age. C) appearance of the grasslands. D) divergence of horses.