The difference between a scientific law and a theory is
What will be an ideal response?
a law is an observed relationship among measurements, and a theory is an explanation.
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In the double-slit experiment with light, each photon impact occurs within an overall two-slit interference pattern. Thus, each photon "knows" that both slits (rather than only one) are open. This behavior is known as
A) quantum interference. B) quantum reality. C) quantum tunneling. D) quantum nonlocality. E) quantum randomness.
In a double-slit experiment, the distance between the slits is 0.2 mm, and the distance to the screen is 150 cm. What wavelength (in nm) is needed to have the intensity at a point 1 mm from the central maximum on the screen be 80% of the maximum intensity?
a. 900 b. 700 c. 500 d. 300 e. 600
The interior layer just below the crust of Earth is called the ________.
A. inner core B. mantle C. troposphere D. outer core
How fast must a nonrelativistic electron move so its de Broglie wavelength is the same as the wavelength of a 3.4-eV photon? (mel = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J)
A) 2000 m/s B) 1900 m/s C) 1700 m/s D) 1600 m/s E) 1400 m/s