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chrish

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hey guys idk how you know all this stuff, and id appreciate if you helped me. i have to do wavelength and and frequency problems and i dont really understand how to do it the way my teacher taught it, so here they are and thanks for helping me.

1.The frequency of yellow light is 5.5 x10^14 Hz. Find the wavelength of yellow light. The speed of light is 300 000 km/s.

2.AM radio signals are broadcast at frequencies between 570 kHz and 1580 kHz (kilohertz) and travel 3.0 x10^8 m/s.

(a) What is the range of wavelengths for these signals? (Enter the wavelengths from shortest to longest.)

____m to ______ m

(b) FM frequencies range between 88 MHz and 108 MHz (megahertz) and travel at the same speed. What is the range of FM wavelengths?

______ m to _____ m

3.The velocity of a wave on a string depends on how hard the string is stretched, and on the mass per unit length of the string. If FT is the tension in the string, and µ is the mass/unit length, then the velocity, v, can be determined.

heres a pic of the formula i have to use

A piece of string 5.30 m long has a mass of 17.0 g. What must the tension in the string be to make the wavelength of a 120 Hz wave 120.0 cm?

thanks again

1.The frequency of yellow light is 5.5 x10^14 Hz. Find the wavelength of yellow light. The speed of light is 300 000 km/s.

2.AM radio signals are broadcast at frequencies between 570 kHz and 1580 kHz (kilohertz) and travel 3.0 x10^8 m/s.

(a) What is the range of wavelengths for these signals? (Enter the wavelengths from shortest to longest.)

____m to ______ m

(b) FM frequencies range between 88 MHz and 108 MHz (megahertz) and travel at the same speed. What is the range of FM wavelengths?

______ m to _____ m

3.The velocity of a wave on a string depends on how hard the string is stretched, and on the mass per unit length of the string. If FT is the tension in the string, and µ is the mass/unit length, then the velocity, v, can be determined.

heres a pic of the formula i have to use

A piece of string 5.30 m long has a mass of 17.0 g. What must the tension in the string be to make the wavelength of a 120 Hz wave 120.0 cm?

thanks again

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