Describe the ring system of Saturn
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The brilliant rings of Saturn are made up of billions of ice particles ranging from microscopic specks to chunks bigger than a house. Each particle orbits Saturn in its own circular orbit. From Earth, astronomers see three rings labeled A, B, and C. Voyager and Cassini images reveal over a thousand ringlets within the rings. The C ring contains boulder-size chunks of ice, whereas most particles in the A and B rings are more golf-ball size, down to dust-size ice crystals. Furthermore, C ring particles are less than half as bright as particles in the A and B rings. Cassini observations show that the C ring particles contain less ice and more minerals. The F ring is clumpy and sometimes appears braided
due of two shepherd satellites. The Encke Gap is not empty. A small moon orbits inside the gap.
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The average distance from Earth to the sun is
a. 1 ly b. 1 million km c. 1 million miles d. 1 billion km e. 1 AU
A 4.00 kg ball is moving at 2.00 m/s to the SOUTH and a 6.00 kg ball is moving at 2.00 m/s to the NORTHWEST. The total momentum of the system is
A. 15.8 kg m/s at an angle of 3.27 degrees NORTH of WEST. B. 8.5 kg m/s at an angle of 3.27 degrees NORTH of WEST. C. 15.8 kg m/s at an angle of 17.2 degrees NORTH of WEST. D. 8.5 kg m/s at an angle of 17.2 degrees NORTH of WEST. E. 20.1 kg m/s at an angle of 27.5 degrees NORTH of WEST.
A ray of light in air enters a glass surface at right angles to the surface. What is the angle of incidence?
A) 0° B) 90° C) 180° D) 270° E) 360°
Through what potential difference would an electron initially at rest need to be accelerated to have its total energy be five times its rest energy? (me = 9.11 × 10^–31 kg, c = 3.00 × 10^8 m/s, and qe = 1.6 × 10^?19 C)
a. 1.6E–19 V b. 2.6E+6 V c. 2.0E+6 V d. 210 V e. 6.8E–3 V