What is a star's luminosity?
A) the apparent brightness of the star in our sky
B) the surface temperature of the star
C) the lifetime of the star
D) the total energy that the star radiates each second
D) the total energy that the star radiates each second
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Double-Slit Interference: In a two-slit experiment, monochromatic coherent light of wavelength 600 nm passes through a pair of slits separated by 2.20 × 10-5 m. At what angle away from the centerline does the first bright fringe occur?
A. 1.56° B. 2.22° C. 3.12° D. 4.70° E. 6.24°
Two identical rooms, A and B, are sealed except for an open doorway between them. Room A is warmer than B. Which room has the greater number of molecules?
A. Room A B. Room B C. Both have the same number of molecules.
If two objects stick together as a result of a collision, the collision is said to be perfectly elastic
Indicate whether the statement is true or false
By what mechanism does solar energy reach the Sun's photosphere from the layer just underneath it?
A) differentiation B) ionization C) radiation D) convection E) conduction