What is so special about the carbonaceous chondrites
a. rich in hydrogen and helium
b. rich in organic compounds
c. rich in nitrogen
d. rich in oxygen
e. rich in rare metals, such as gold
Answer: b. rich in organic compounds
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Uncertainty Principle Using Momentum and Position: An electron is trapped in a quantum well that is 48.6 nm wide. Calculate the minimum uncertainty in its velocity. (h = 6.626 × 10-34 J ? s, melectron = 9.11 × 10-31 kg)
A. 7.49 × 103 m/s B. 1.79 × 104 m/s C. 2.38 × 103 m/s D. 3.34 × 104 m/s E. 1.01 × 103 m/s
Beats: Two pure tones are sounded together and a particular beat frequency is heard. What happens to the beat frequency if the frequency of one of the tones is increased?
A. It increases. B. It decreases. C. It does not change. D. It could either increase or decrease.
The average kinetic energy of the atoms in a spoon determines its __________
Fill in the blank(s) with correct word
The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T that are perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed up out of the page, the direction of the magnetic field at P is closest to the direction of
a.
E.
b.
F.
c.
G.
d.
H.
e.
A