If we can solve the orbital motion of an eclipsing binary, we can find
a. the mass of each star.
b. the diameter of each star.
c. the distance to the binary.
d. all of the above
e. both a and b
E
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Simple Pendulum: A simple pendulum takes 2.00 s to make one compete swing. If we now triple the length, how long will it take for one complete swing?
A. 6.00 s B. 3.46 s C. 2.00 s D. 1.15 s E. 0.667 s
Why is Venus so much hotter than Earth?
A) Venus has significant amounts of carbon dioxide in its atmosphere. B) Venus is more massive. C) Venus rotates more slowly. D) Venus was formed before the Earth was. E) Venus is closer to the Sun.
During a hard stop, a car and its passengers slow down with an acceleration of 8.0 m/s2. What magnitude force does a 50-kg passenger exert on the seat belt in such a stop?
What will be an ideal response?
What value of n corresponds to a wavelength of 91.7 nm in the Lyman series?
A) 3 B) 5 C) 1 D) 13 E) 9