Increasing the wavelengths in a double-slit experiment has what effect on the position of maxima on a screen at fixed distance?
A. none
B. maxima get closer together
C. maxima get farther apart
D. maxima get cancelled by minima
E. maxima pass minima on the screen
C. maxima get farther apart
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The science of changing the activation enthalpy of a process is called _____________.
Fill in the blank(s) with the appropriate word(s).
Total Internal Reflection: A thick slab of plastic lies at the bottom of a tank filled with water having an index of refraction of 1.33. A narrow laser beam is shone directly downward through the water on the plastic. You then gradually rotate the laser, thereby increasing the angle with respect to the normal that it strikes the plastic. You carefully note that at the instant the beam makes an angle of 66.5° with the normal in the water, no light enters the plastic, but it did enter for angles smaller than that. What is the speed of light in the plastic slab? (c = 3.00 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
The grooves and ridges on Ganymede are thought to
A) be due to the moon's rapid rotation. B) have grown considerably larger since the Voyager spacecraft discovered them. C) be part of an ongoing volcanic process. D) be due to crustal tectonics motion (plate tectonics). E) have formed within the last thousand years.
Two sources emit beams of microwaves. The microwaves from source A have a frequency of 10 GHz, and the ones from source B have a frequency of 20 GHz. This is all we know about the two beams
Which of the following statements about these beams are correct? (There could be more than one correct choice.) A) Beam B carries twice as many photons per second as beam A. B) A photon in beam B has twice the energy of a photon in beam A. C) The intensity of beam B is twice as great as the intensity of beam A. D) A photon in beam B has the same energy as a photon in beam A. E) None of the above statements are true.