The Local Group is ________.
A. a cluster of galaxies in which the Milky Way is located
B. a star cluster to which the Sun belongs
C. the group of planets around the Sun
D. the name of the spiral arm of our Galaxy in which the Sun is located
Answer: A
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Assume 3.0 moles of a diatomic gas has an internal kinetic energy of 10 kJ. Determine the temperature of the gas after it has reached equilibrium
a. 270 K b. 160 K c. 800 K d. 1 550 K e. 400 K
The Lyman-alpha "forest" are absorption lines in a quasar spectrum created by all of the gases along the billions of light years its energy has traversed
Indicate whether the statement is true or false
Sounds from musical instruments are produced by
A) vibrating strings. B) vibrating air columns. C) percussion. D) all of the above E) none of the above
A converging lens with the same curvature on both faces and a focal length of 25 cm is to be made from crown glass having a refractive index of 1.52. What radius of curvature is required for each face?
What will be an ideal response?