A soap bubble (n = 1.35) is floating in air. If the thickness of the bubble wall is 322 nm, which of the following wavelengths of visible light is strongly reflected?
a. 540 nm (green)
c. 500 nm (blue)
b. 620 nm (red)
d. 580 nm (yellow)
D
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A parallel light beam containing two wavelengths, 480. nm and 700. nm, strikes a plain piece of glass at an angle of incidence of 60°. The index of refraction of the glass is 1.4830 at 480. nm and 1.4760 at 700. nm
Determine the angle between the two beams in the glass.
A neutral atom must have ____
a. an equal number of protons and neutrons b. an equal number of protons and electrons c. an equal number of neutrons and electrons d. less electrons than protons e. more electrons than neutrons
Which of the following travel at or very near lightspeed?
A) photon B) neutrino C) Both of the above. D) Z particle E) All of the above.
The planet Venus requires 225 days to orbit the sun, which has a mass M = 1.99 × 10^30 kg, in an almost circular trajectory. Calculate the radius of the orbit and the orbital speed of Venus as it circles the sun