The rings of Saturn occupy the region inside Saturn's Roche limit
Indicate whether the statement is true or false
TRUE
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A 22.0-kg mirror with a surface area of 1.0 m2 and a 98% reflectivity is bombarded by light of average intensity 770.0 W/m2 at an angle of 30.0? to the normal of its surface
If the light has a duration of how much does the velocity of the mirror change during that time? (c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2) A) 120 nm/s B) 4.2 nm/s C) 3.6 nm/s D) 2.1 nm/s
The mass of an object is fixed, but its weight varies from location to location
Indicate whether the statement is true or false
Approximately how long does it take light to travel across the diameter of the Milky Way?
A) 27,000 years B) 100,000 years C) 200,000 years D) 1 million years
In a uniformly expanding universe, which statement best describes the situation as viewed from an observer in Galaxy C (not the Milky Way Galaxy)?
A) Galaxy C observer sees some galaxies moving away, some moving towards itself. B) Galaxy C observer sees all galaxies moving away from the Milky Way Galaxy. C) Galaxy C observer sees all other galaxies moving away from itself.