Plane waves incident upon a barrier that pass through a small opening
A) continue as plane waves.
B) fan out.
C) converge.
D) become polarized.
E) all of the above
Answer: B
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There is only one form of neutrino
a. True b. False Indicate whether the statement is true or false
Galaxy A is 300 Mpc from Galaxy B. Hubble's Law says that V=H0 x D. About how fast is Galaxy A receding from the perspective of Galaxy B? Use a value of 75 km/s/Mpc for Hubble's constant.
A. 225 km/s B. 30000 km/s C. 75 km/s D. 22500 km/s E. 15000 km/s
An experiment similar to the Miller-Urey Experiment was more recently done by NASA using an icy mixture of water, methanol, ammonia and carbon monoxide. The mixture was exposed to ultraviolet radiation
The results of this experiment were that no amino acids or DNA were formed, but complex organic molecules were observed. The purpose of this experiment was to determine whether: A) DNA could form from amino acids. B) DNA could form from ultraviolet radiation. C) ultraviolet radiation could create amino acids. D) amino acids could form in the harsh vacuum of outer space. E) amino acids cold form from water, methanol, ammonia and carbon monoxide.
Relative to some reference frame in the universe, you may now be traveling at a speed
A) faster than the speed of light. B) slower than the speed of light. C) at the speed of light. D) any of the above