Spaceman Speff orbits spherical asteroid X with his spaceship. To remain in a circular orbit at 421 km from the asteroid's center, he should maintain a speed of What is the mass of planet X? (G = 6.67 × 10-11 N ? m2/kg2)
A) 4.0 × 1019 kg
B) 5.1 × 1017 kg
C) 4.0 × 1016 kg
D) 5.1 × 1014 kg
A
Physics & Space Science
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The diffusion of atoms of similar size depends upon the presence of _____________.
Fill in the blank(s) with the appropriate word(s).
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Characteristics of Waves: A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency of the waves in such a tsunami?
A. 0.93 Hz B. 0.00026 Hz C. 1.1 Hz D. 6.8 Hz E. 0.15 Hz
Physics & Space Science
Water flows through a pipe having a varying width. More water flows per second through the wide section than through the narrow section because there is more room for it to flow
A) True B) False
Physics & Space Science