What is the minimum thickness of a soap bubble film with refractive index 1.38 that results in a constructive interference in the reflected light if this film is illuminated by a beam of light of wavelength 610 nm?
A) 444 nm B) 222 nm C) 555 nm D) 333 nm E) 111 nm
E
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Which of the following worlds has the greatest difference in temperature between its "no atmosphere" temperature and its actual temperature?
A) Mercury B) Venus C) Earth D) the Moon E) Mars
Kepler’s second law implies that as a planet’s distance from the sun increases in an elliptical orbit, its orbital speed
A. Increases. B. Decreases. C. Remains the same. D. Changes in a way we cannot determine.
The surface of Earth is an example of a free-float reference frame
Indicate whether the statement is true or false
The figure shows a cross section of three parallel wires each carrying a current of 15 A. The currents in wires A and C are out of the paper, while that in wire B is into the paper. If the distance R = 5.0 mm, what is the magnitude of the force on a 4.0-m length of wire C?
A. 90 mN B. 54 mN C. 30 mN D. 18 mN E. 36 mN