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Chapter 17: Q. 25 (page 458)
What is the thinnest film of on glass that
produces a strong reflection for orange light with a wavelength of 600 nm?
The thinnest film should be of thick that produces reflection of orange light.
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A carbon dioxide laser is an infrared laser. A CO2 laser with a cavity length of 53.00 cm oscillates in the m = 100,000 mode. What are the wavelength and frequency of the laser beam?
A very thin oil film floats on water.
What is the thinnest film that produces a strong reflection for
green light with a wavelength of 500 nm?
Two strings are adjusted to vibrate at exactly 200 Hz. Then the tension in one string is increased slightly. Afterward, three beats per second are heard when the strings vibrate at the same time. What is the new frequency of the string that was tightened?
Two loudspeakers emit 400 Hz notes. One speaker sits on the
ground. The other speaker is in the back of a pickup truck. You
hear eight beats per second as the truck drives away from you.
What is the truck鈥檚 speed?
In a laboratory experiment, one end of a horizontal string is tied
to a support while the other end passes over a frictionless pulley
and is tied to a 1.5 kg sphere. Students determine the frequencies
of standing waves on the horizontal segment of the string, then
they raise a beaker of water until the hanging 1.5 kg sphere is
completely submerged. The frequency of the fifth harmonic with
the sphere submerged exactly matches the frequency of the third
harmonic before the sphere was submerged. What is the diameter
of the sphere?
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