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Waves: question about sound 0001
Is sound able to travel through a vacuum?
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Relation between frequency and wavelength (3140)
A spring is producing waves of frequency 4 Hz and wavelength 0.5 m. What is its velocity? What will be its wavelength if the frequency is double? What will be its wavelength if frequency is reduced to half?
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Velocity of a wave (2911)
The wavelength of a wave is 0.00015 m and its frequency is 7 000 Hz. What is the velocity of the wave?
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Heat transfer in fluids 0001
How is heat transferred in the air?
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Refraction and velocity of light 0001
The refractive index of green light in water is 1,42. What is its velocity when it travels through water?
(Velocity of light in a vacuum is 300 000 km/s).