When an object floats in a liquid, the buoyant force is __________ the weight of the liquid displaced by the object
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equal to
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O and B stars only occur in the galactic _______________
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Ekapluto is an unknown planet that has two spherical moons in circular orbits. The table summarizes the hypothetical data about the moons. Both moons have low axial spin rates. (G = 6.67 × 10-11 N ? m2/kg2)
Mass Radius Orbital radius Orbital period Moon A 4.0 × 1020 kg 2.0 × 108 m 4.0 × 106 s Moon B 1.5 × 1020 kg 2.0 × 105 m 3.0 × 108 m The acceleration due to gravity at the surface of Moon B is A) 0.10 m/s2. B) 0.15 m/s2. C) 0.20 m/s2. D) 0.25 m/s2. E) 0.30 m/s2.
The spectrum of radio galaxies indicates the energy is in ________ radiation
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The large envelope of comets that encircle the Sun beyond the outer planets is called the ________ cloud.
Fill in the blank(s) with the appropriate word(s).