c = 1/squareroot epsilon_0 mu_0 = 3.00 Times 10^8 m/s c = f lambda IT is 149.6 1

Question

c = 1/squareroot epsilon_0 mu_0 = 3.00 Times 10^8 m/s c = f lambda IT is 149.6 10^6 km from the Sun to the Earth How much time does it take for the Sun's radiation to reach Earth? Yellow light has a wavelength of 550 0 nm. What is its frequency? What is the frequency of a gamma ray with wavelength 4.00 Times 10^-14 m? What is the wavelength of the radio waves from station 90 1 FM? f_o = 1/2pi squareroot LC Radio station 90.1 FM uses an oscillator with a 2 40 mu H inductor What capacitor does the station use?

Explanation / Answer

t = d/v

d = 149.6 x 10^6 km = 149.6 x 10^9 m

v = c = 3 x 10^8 m/s

t = 498.67 s

part b )

c = f*lambda

lambda = 550 nm = 550 x 10^-9 m

c = speed of light

f = c/lambda = 5.45 x 10^14 Hz

part c )

f = c/lambda =3 x 10^8/4*10^-14 = 7.5 x 10^21 Hz

part d )

90.1 Fm = 90.1 MHz

lambda = c/f = 3*10^8/(90.1*10^6) = 3.3296 m

part e )

fo = 90.1 x 10^6 Hz

C = 1/fo^2*4*pi^2*L

C = 1.3 x 10^-12 F

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