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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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
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
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?
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