The Grand Tetons are examples of which type of mountain?
a. Fold
b. Fault-block
c. Volcanic
d. None of these
b
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An electron is released from rest at a distance of 9.00 cm from a proton. If the proton is held in place, how fast will the electron be moving when it is 3.00 cm from the proton?
(mel = 9.11 × 10-31 kg, e = 1.60 × 10-19 C, k = 1/4??0 = 8.99 × 109 N ? m2/C2) A) 75.0 m/s B) 106 m/s C) 130 m/s D) 1.06 × 103 m/s E) 4.64 × 105 m/s
Why do we think that DNA was probably NOT the first self-replicating molecule?
A) it is able to replicate using carbohydrates rather than proteins B) it is far to complex to have been the first self-replicating molecule C) it is able to replicate at high temperatures found near deep ocean vents D) laboratory have shown that it is able to catalyze its own replication
A force does work on an object if a component of the force
a. is perpendicular to the displacement of the object. b. is parallel to the displacement of the object. c. perpendicular to the displacement of the object moves the object along a path that returns the object to its starting position. d. parallel to the displacement of the object moves the object along a path that returns the object to its starting position.
A car accelerates uniformly. It starts from rest and reaches 36 m/s after 6.0 seconds. During the 6.0 seconds it has traveled ________ m.
Fill in the blank(s) with the appropriate word(s).