Matter Waves: If the wavelength of a photon in vacuum is the same as the de Broglie wavelength of an electron, which one is traveling faster through space?
A. The electron because it has more mass.
B. The photon because photons always travel through space faster than electrons.
C. They both have the same speed.
Answer: B
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The density of aluminum is 2700 kg/m3. If transverse waves propagate at in a aluminum wire, what is the tension on the wire?
A) 52 N B) 31 N C) 42 N D) 62 N
If the distance between two negative point charges is increased by a factor of two, the resultant potential energy is what factor times the initial potential energy?
a. 2 c. 1/4 b. 1/2 d. 4
The wave front shown at the left for light in air reaches the plane boundary between air and two transparent mediums with n1 = 1.5 and n2 = 3.00, respectively
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Which diagram below correctly illustrates the wave front after it has entered the two mediums at the right?
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Deuterium and tritium are both
A) forms of hydrogen. B) isotopes of the same element. C) both of these D) neither of these