<span>The angular momentum of a particle in orbit is
l = m v r
Assuming that no torques act and that angular momentum is conserved then if we compare two epochs "1" and "2"
m_1 v_1 r_1 = m_2 v_2 r_2
Assuming that the mass did not change, conservation of angular momentum demands that
v_1 r_1 = v_2 r_2
or
v1 = v_2 (r_2/r_1)
Setting r_1 = 40,000 AU and v_2 = 5 km/s and r_2 = 39 AU (appropriate for Pluto's orbit) we have
v_2 = 5 km/s (39 AU /40,000 AU) = 4.875E-3 km/s
Therefore, </span> the orbital speed of this material when it was 40,000 AU from the sun is <span>4.875E-3 km/s.
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screwdriver :)
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La lumière qui vient des étoiles.
<span>Through which medium would sound travel fastest water a steel bar or nitrogen? ... The speed of sound in air, of which 78% is nitrogen ~ 340 m/s ... Which medium does sound travel the fastest through air water or steel? .... in steel sound travel faster than water because liquids are more denser than gases but less denser ...</span>
Answer:to past school duhh
Explanation: