How does Kepler's First Law refine the Copernican model greatly?
What will be an ideal response?
Copernicus, like the Greeks, thought all orbits were circular. But when Kepler used elliptical orbits, particularly with Mars and Mercury, the theory fit the actual observations of planetary motion much better than did the old Ptolemaic one.
You might also like to view...
Ideal Gas Law: A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of 290 K. The atomic mass of neon is 20.2 g/mol. What is the mass of the neon gas in the flask. (R = 8.31 J/mol ? K, 1 atm = 101 kPa, NA = 6.022 × 1023 molecules/mol)
A. 2.7 × 10-2 B. 1.6 × 10-2 C. 1.3 × 101 D. 2.7 × 101 E. 2.7 × 103
Saturn's orbital semi-major axis is almost twice Jupiter's
Indicate whether the statement is true or false
Does Venus have auroras around its poles, like Earth? Why or why not?
A) no, because it lacks a global magnetic field B) yes, because it is bombarded by charged particles from the Sun C) no, because its atmosphere is too thick D) yes, because strong winds generate light near its poles
Length Contraction: Two stars are at rest relative to each other. In their common rest frame, these stars are 90.0 light-years apart. If they are measured to be 68.7 light-years apart by the navigator of a spaceship traveling between them, how fast is the spaceship moving relative to these stars?
A. 0.646c B. 0.604c C. 0.558c D. 0.505c