A proton and an electron each have the same de Broglie wavelength. (i) Which has the lower speed, and (ii) which has the lower kinetic energy?
a. (i) the electron, (ii) the electron
b. (i) the electron, (ii) Either one can have the greater kinetic energy.
c. (i) the proton, (ii) Either one can have the greater kinetic energy.
d. (i) the proton, (ii) the proton
D
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Vectors V1 and V2 are orthogonal. If V1 is (5i + 7j - 3k) and V2 = (7i + Vy j + 14k), then component Vy in vector V2 is:
(A) 3.6 (B) 1.0 (C) -5.2 (D) 2.7
You obtain a 100. W lightbulb and a 50. W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?
A) Both bulbs glow at the same increased brightness. B) The 100-W bulb glows brighter than the 50-W bulb. C) Both bulbs glow at the same reduced brightness. D) The 50-W bulb glows more brightly than the 100-W bulb.
What is the wavelength of a photon emitted when an electron in hydrogen goes from the n = 4 state to the n = 1 state?
A. 323 nm B. 156 nm C. 121 nm D. 103 nm E. 97.3 nm
What is the highest order maximum that is possible when using a grating with 600 slits per mm for a wavelength of 700 nm?
A. 1 B. 2 C. 3 D. 4 E. 5