Which Greek school of thought believed that life on Earth was unique?
A) the Aristotelians
B) the Platonists
C) the stoicists
D) the atomists
A
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A single slit, 1,400 nm wide, forms a diffraction pattern when illuminated by monochromatic light of 490 nm wavelength. The largest angle from the central maximum at which the intensity is zero is closest to:
A) 44° B) 41° C) 38° D) 35° E) 32°
State the first postulate of the special theory of relativity (relativity principle)
What will be an ideal response?
Intensity: The intensity of the waves from a point source at a distance d from the source is I. At what distance from the sources is the intensity equal to 2I?
A. d/2
B. d/
C. d/4
D. d/8
The figures below represent interference fringes. The distances from the screen to the slits is the same for each figure, and the planes of the screen and the slits are parallel. Which figure(s) represent(s) slits with the greatest spacing d between the slits? The white spaces represent the interference maxima.
A. I. B. II. C. III. D. IV. E. V.