J. Robert Oppenheimer was
A) the head of the program to develop the world's first fusion bomb.
B) the inventor of radiation therapy.
C) the head of the program to develop the world's first fission bomb.
D) the discoverer of nuclear fission.
E) the head of the program to develop the world's first nuclear reactor.
C
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Double-Slit Interference: In a double-slit interference experiment you are asked to use laser light of different wavelengths and determine the separation between adjacent maxima. You observe that this separation is greatest when you illuminate the double slit with
A. blue light. B. green light. C. yellow light. D. red light. E. The separation is the same for all wavelengths.
None of the pulsars emit pulses of visible light because
a. pulsars are to hot to emit visible light. b. pulsars contain black holes that won't let visible light escape. c. the gravitational field of a pulsar is so great that the visible light emitted is red shifted. d. pulsars are too far away for the visible light to be bright enough to be detected at Earth. e. A few pulsars do emit visible light pulses.
The current standard definition for the second has been based on which of the following?
a. characteristic frequency of the light from cesium atoms b. average solar day c. sidereal day d. Greenwich Civil Time
Contrast S and P waves in terms of speed and transmission through the interior
What will be an ideal response?