Many objects classified as irregular galaxies are actually galactic mergers.
Answer the following statement true (T) or false (F)
True
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A ray of light traveling in air strikes the surface of a certain plastic slab at 63.0° with respect to the normal in air. It travels in the plastic slab at a 30.6° angle with respect to the normal. Find the critical angle for the plastic in air
What will be an ideal response?
Which of these behaves most similarly to electrons in the Feynman experiments?
a. atoms b. atomic nuclei c. protons d. photons e. bullets
What does a grating do?
What will be an ideal response?
If you were standing on the Earth's equator, which of the following in the sky would pass through your zenith during the entire day (24 hours)?
a. the north celestial pole b. the south celestial pole c. the celestial equator d. the nadir