What does the polarization of starlight tell us about the dust grains and the Galaxy?
What will be an ideal response?
The Galaxy's magnetic field aligns the rod-like grains, containing iron and nickel along with silicates and carbon, so the scattering of starlight is aligned accordingly.
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An observer will measure the wavelength of waves emanating from a source that is moving away as longer than it really is
Indicate whether the statement is true or false
Our solar system lies about how many light-years from the center of the nuclear bulge of the Milky Way?
a. 2400 b. 28,000 c. 110 d. 4.3
Series Resonance: A series RLC circuit has a 100-? resistor, a 0.100-?F capacitor and a 2.00-mH inductor connected across a 120-V rms ac voltage source operating at 1000/? Hz. What is the resonant frequency of this circuit?
A. 70.7 kHz B. 17.9 kHz C. 22.5 kHz D. 35.3 kHz E. 11.3 kHz
Identify with an H or L to which family, hadron or lepton, each of the following belong: proton; neutrino; pion; tauon
What will be an ideal response?