In Trial 9, the electrical force exerted by Sphere Y on Sphere X and the electrical force
A. east； east
B. east； west
C. west； west
D. west； east
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Based on the description of a lahar deposit, how do clasts and matrix particles differ in
Any clast is larger than the largest matrix particle.
B. Any clast is smaller than the smallest matrix particle.
C. Some, but not all, clasts are smaller than the largest matrix particle.
D. Some, but not all, matrix particles are larger than the smallest clast.
According to Figure 3, clasts and matrix particles having diameters greater than or equal
A. 13%
B. 33%
C. 63%
D. 83%
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