PROBLEM SET 2
Physics 2022
1.
What is the frequency of electromagnetic radiation that has a wavelength of 0.4 m?
In what
part of the spectrum does this radiation occur?
2.
What is the wavelength of electromagnetic radiation that has a frequency of 3 x 10
16
Hz?
In
what part of the spectrum does this radiation occur?
3.
Saturn is ten times farther from the Sun than is the Earth.
How does the flux of solar energy
at Saturn compare with that at the Earth?
4.
How close to the Sun would a spacecraft have to go to reach the distance at which the flux of
solar energy is 20 times as large as the solar energy flux at the Earth?
5.
Your normal body temperature is 98.6º F.
What kind of radiation do you predominantly
emit?
At what wavelength (in nm) do you emit the most radiation?
6.
What is the temperature of the Sun’s surface in degrees Fahrenheit?
7.
The star Alpha Lupi (the brightest star in the constellation Lupus, the Wolf) has a surface
temperature of 21,600 K.
How many times more energy is emitted each second from each
square meter of the surface of Alpha Lupi than from each square meter of the Sun’s surface?
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- Spring '11
- sowell
- Energy, Light, Radiation, The Electromagnetic Spectrum, Wavelength, Electromagnetic spectrum
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