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Unformatted text preview: 2 ) emitted by a typical person this way? c) What is the total energy (energy per unit time, in Watts) emitted by a typical person this way? 4. You detect a spacecraft moving around a distant planet. You are located in the plane of the orbit (edge on to the orbit). You observe that the spacecrafts radio signal smoothly varies in wavelength between 2.9995 m and 3.0005 m and back over a period of 100 minutes. a) Assume that the radio is broadcasting normally, at a constant wavelength of 3.0000 m. Describe precisely what the spacecraft is doing when the wavelength is 2.9995 m and when it is 3.0005 m. b) Since the variation is regular you can infer that the orbit is circular. Determine the radius of the orbit. c) rom the above information calculate the mass of the planet....
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 Spring '11
 wadsley
 Astronomy

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