If we found a solar system where the central star's mass was double that of the Sun, what would be the period a planet orbiting 1 AU from the central star?
A) more than a year
B) less than a year
C) about a year
D) impossible to say, since we need to know the mass of the planet to predict its period
A) more than a year
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_______________ are objects of known luminosity used for finding distances
Fill in the blank(s) with correct word
How does the rotation curve method differ from the analysis of binary stars?
What will be an ideal response?
A block holding a ringing tuning fork oscillates back and forth, attached to a wall by a spring of spring on a horizontal, frictionless surface, with amplitude 17 cm. The mass of the tuning fork and block together is 0.75 kg. An observer who is situated so that the block’s direction of motion is either directly towards or away from him notes that the frequency he hears varies between 174 and 178 Hz. What is the spring constant for the spring ? The speed of sound at the time of the experiment is 340 m/s.
A. 390 N/m B. 203 N/m C. 1590 N/m D. 290 N/m E. 100 N/m
The kinetic theory of gases suggests the average kinetic energy per molecule is (for a monatomic gas)
A) 1/2 kT. B) 5/2 kT. C) 3/2 kT. D) 2 kT. E) kT.