A planetary nebula has a radius of 0.5 pc and is expanding at 20 km/s. What is the approximate age of this planetary nebula? (1 pc is equal to 3*1013 km and 1 year is equal to 3.15*107 seconds.)
A) 240 years
B) 790,000 years
C) 96,000 years
D) 960 years
E) 24,000 years
Correct Answer:
Verified
Q23: What are the two longest stages in
Q24: The Chandrasekhar limit tells us that
A)accretion disks
Q25: A nova is almost always associated with
A)
Q28: A planetary nebula is
A) the expelled outer
Q32: A Type I supernova is believed to
Q33: A white dwarf is composed of
A)hydrogen nuclei
Q34: A planetary nebula
A) produces an absorption spectrum.
B)
Q35: As a white dwarf cools its radius
Q36: The Algol paradox is explained by considering
A)the
Q58: What nuclear fusion mechanism does an isolated
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents