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
b
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The sound from a single source can reach point O by two different paths. One path is 20.0 m long and the second path is 21.0 m long. The sound destructively interferes at point O
What is the minimum frequency of the source if the speed of sound is 340 m/s? A) 340 Hz B) 6800 Hz C) 520 Hz D) 680 Hz E) 170 Hz
The magnetic domains in a non-magnetized piece of iron are characterized by which orientation?
a. parallel to the magnetic axis b. anti-parallel (opposite direction) to the magnetic axis c. random d. perpendicular to the magnetic axis
If an electron in the lab has a kinetic energy equal to twice its rest energy, what is its speed in the lab?
A) 0.87c B) 0.89c C) 0.94c D) 0.91c E) 0.84c
An electron (m = 9.1 × 10?31 kg, q = ?1.6 × 10?19 C) starts from rest at point A and has a speed of 5.0 × 106 m/s at point B. Only electric forces act on it during this motion. Determine the electric potential difference VA?VB.
A. ?71 V B. +71 V C. ?26 V D. +26 V E. ?140 V