To calculate the masses of stars in a binary system, we must measure their
A) orbital period and average orbital distance.
B) spectral types and distance from Earth.
C) absolute magnitudes and luminosities.
D) luminosities and distance from Earth.
A) orbital period and average orbital distance.
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Process of Science: Gravity only affects very massive objects and we can therefore only test theories about it when looking at the orbits of planets
Indicate whether the statement is true or false
Which one of the following is the correct electronic configuration for carbon?
A) 1s2 2s2 2p2 B) 1s1 2p1 C) 1s1 2s2 2p1 D) 1s1 2s1 2p1 E) 1s2 2s2 2p4
Compared to its size, the Milky Way is very far away from all other galaxies
Indicate whether the statement is true or false
A jet of water flowing from a hose at 15 m/s is directed against a wall. If the mass flow in the fluid stream is 4.3 kg/s, what force is the water applying to the wall if backsplash is negligible?
a. 30 N c. 65 N b. 40 N d. 127 N