Sedimentary layer A lies above sedimentary layer B, and both are cut by an igneous dike, C. Therefore, the order from oldest to youngest is
a. A, B, C.
b. C, B, A.
c. B, A, C.
d. none of these.
c
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Suppose you put a chocolate layer on pieces of candy. Compared with the amount of chocolate used to cover 1 pound of large pieces, if you cover 1 pound of smaller pieces you'll use
A) less chocolate. B) the same amount of chocolate. C) more chocolate. D) makes no difference
If the intensity of a sound is increased by a factor of 100, how is the decibel level changed? The new decibel level will be:
a. two units greater. b. double the old one. c. ten times greater. d. twenty units greater.
A proton (m = 1.7 × 10^?27 kg, q = +1.6 × 10^?19 C) starts from rest at point A and has a speed of 40 km/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VB ? VA
a. +8.5 V b. ?8.5 V c. ?4.8 V d. +4.8 V e. ?17 V
A rectangle has a length of 1.323 m and a width of 4.16 m. Using significant figure rules, what is the area of this rectangle?
a. 5.503 68 m2 b. 5.503 7 m2 c. 5.504 m2 d. 5.50 m2 e. 5.5 m2