To calculate the density of the white dwarf we need the mass of the Sun and the radius of the Earth:
- Sun mass:
- Earth radius:
Assuuming the dwarf to be a perfect sphere, its volume is
.
The average density is given by
so, substituting we find
The sun is bright and when its cold there is no sun
Answer:
C) 200 m/s
Explanation:
The sound travels a total distance of 360 m in 0.03 minutes.
v = (360 m) / (0.03 min × 60 s/min)
v = 200 m/s