Distinguish an E0 from an E7 galaxy
What will be an ideal response?
Elliptical galaxies of type E0 show spherical symmetry, like a huge globular cluster; they spin very slowly. E7 spin faster, and are more flattened into a lens shape, but they don't show the disks found in spirals.
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Energy Levels: What is the energy required to remove the electron from a hydrogen atom in the n = 11 state?
A. 0.112 eV B. 1.24 eV C. 13.5 eV D. 12.4 eV E. 0.141 eV
Two spheres are made of conducting material. Sphere #2 has twice the radius of Sphere #1. What is the ratio of the capacitance of Sphere #2 to the capacitance of Sphere #1?
A. 1, since all conducting spheres have the same capacitance. B. 2 C. 4 D. 8 E. A single sphere has no capacitance since a second concentric spherical shell is necessary to make a spherical capacitor. Thus, none of the answers above is correct.
Red light with a wavelength of 650. nm travels from air into a liquid with an index of 1.33. What is the frequency and wavelength in the liquid?
What will be an ideal response?
A Fraunhofer diffraction pattern is created by monochromatic light shining through which of the following?
a. single slit b. double slit c. triple slit d. more than 3 slits