A soap bubble film (n=1.42 ) of thickness 106 nm results in a constructive interference in the reflected light if this film is illuminated by a beam of light with a wavelength of 601 nm
What are the next three thicknesses of this film that will also result in a constructive interference? A)
212 nm, 318 nm, 424 nm
B)
53.0 nm, 35.3 nm, 26.5 nm
C)
212 nm, 424 nm, 636 nm
D)
67.0 nm, 42.4 nm, 22.3 nm
E)
318 nm, 530 nm, 742 nm
E
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Tidal forces are very important to the Algol system today, but were not important when both stars were still on the main sequence. Why not?
A) Main-sequence stars in a system like the Algol system are small compared to their physical separation. B) Main-sequence stars are too big to be affected by tidal forces. C) Main-sequence stars are too massive to be affected by tidal forces. D) Main-sequence stars are unaffected by tidally-induced mass transfer.
The magnetic field going through a stationary circular loop increases from zero to 5 T in a certain time t. The induced current in the loop will depend on the radius of the loop, r, the resistance of the loop, R, and the time, t. If two of these stay constant, the induced current can be directly proportional to:
a. r. c. R. b. t. d. none of these
The Galileo probe into Jupiter's atmosphere found more water than expected
Indicate whether the statement is true or false
As I slide a box at constant speed up a frictionless slope, pulling parallel to the slope, the tension in the rope will be:
a. greater than the tension would be if the box were stationary. b. greater than the weight of the box. c. equal to the weight of the box. d. less than the weight of the box.