In a single-slit diffraction experiment, a beam of monochromatic light passes through a slit of width 11.0 ?m
If the first order dark fringe of the resulting diffraction pattern is at an angle of 4.31°, what is the wavelength of light?
A) 827 nm
B) 301 nm
C) 602 nm
D) 402 nm
E) 201 nm
A
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An atom that is excited
a. is also ionized. b. is an isotope. c. has had its electron moved to the lowest energy level. d. can emit a photon when the electron moves to a lower energy level. e. can emit a photon when the electron moves to a higher energy level.
Magnetic Moment: What is the magnetic moment of a rectangular loop having 120 turns that carries 6.0 A if its dimensions are 4.0 cm × 8.0 cm?
A. 0.23 A ? m2 B. 2.3 A ? m2 C. 23 A ? m2 D. 230 A ? m2
The angular separation of two stars is 0.1 arcseconds and you photograph them with a telescope that has an angular resolution of 1 arcsecond. What will you see?
A) The photo will seem to show only one star rather than two. B) The two stars will appear to be touching, looking rather like a small dumbbell. C) The stars will not show up at all in your photograph. D) You will see two distinct stars in your photograph.
Express 100 megadollars in standard powers-of-10 notation