The most common rock type in the earth's crust is
a) igneous
b) sedimentaty
c) metamorphic
d) sandstone.
Answer: a) igneous
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Nonmagnetic metals in municipal waste are separated with ___________.
Fill in the blank(s) with the appropriate word(s).
A point on the rim of a 0.25-m radius fan blade has centripetal acceleration of 0.20 m/s2 . Find the centripetal acceleration of a point 0.1 m from the center of the same wheel
a. 0.01 m/s2 c. 0.04 m/s2 b. 0.02 m/s2 d. 0.08 m/s2
A star with an apparent magnitude of 10 appears fainter than a star with an apparent magnitude of 9
Indicate whether the statement is true or false
An exponent, such as the 4 in the expression 94, means:
a. the number of times the number before the exponent is multiplied by 10 (9 × 10 × 10 × 10 × 10). b. the number of times the number before the exponent is multiplied by itself (9 × 9 × 9 × 9). c. the number to multiply the first number by (9 × 4). d. the number of times the digit is written (9999). e. the number to add to the first number (9 + 4).