A soap bubble, when illuminated with light of frequency 5.11 × 1014 Hz, appears to be especially reflective. If it is surrounded by air and if its index of refraction is 1.35,
what is the thinnest thickness the soap film can be? (c = 3.00 × 108 m/s)
109 nm
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An object has a volume of 4.0 m3 and weighs 40,000 N. What will its apparent weight be in water of density 1000 kg/m3 (apparent weight is the reading of a scale which supports the object)
A) 40,000 N B) 39,200 N C) 9,800 N D) 800 N
A damped oscillator is released from rest with an initial displacement of 10.00 cm. At the end of the first complete oscillation the displacement reaches 9.05 cm. When 4 more oscillations are completed, what is the displacement reached?
A. 7.41 cm B. 6.71 cm C. 6.07 cm D. 5.49 cm E. 5.25 cm
Which of the following are found on Triton?
a. craters b. flooded basins c. atmospheric clouds d. a thick nitrogen atmosphere e. craters, flooded basins, atmospheric clouds, and a thick nitrogen atmosphere
If you see a body in space that is not moving in a straight line at constant speed, what can you say about it?
A. It is not subject to any outside forces. B. It must be an artificial satellite. C. There must be a net force acting on it. D. None of these choices is correct.