Relativity equations for time, length and momentum hold true for ...

[robinn137]

Relativity equations for time, length and momentum hold true for
 
  A) relativistic speeds.
  B) everyday low speeds.
  C) both of these
  D) neither of these

Question 2

Halley's comet has an elliptical orbit around the Sun with a period of 76.0 years. At its closest approach (perihelion) it is 88.6 x 1010 m from the Sun and has a speed of 54.8 km/s.
 
  How far is it from the Sun at its furthest point (aphelion)? The mass of the Sun is 2.00  1030 kg and G = 6.67 x 10-11 Nm2/kg2. A) 12.8  1012 m
  B) 32.3  1012 m
  C) 5.42  1012 m
  D) 31.4  1012 m
  E) 52..3  1012 m

[sierramartinez]

Answer to Question 1

Answer: C

Answer to Question 2

B