Author Question: Find the average density of a red giant star with a mass of 20 1030 kg (approximately 10 solar ... (Read 86 times)

crobinson2013 · **on:** Jul 28, 2018

Find the average density of a red giant star with a mass of 20 1030 kg (approximately 10 solar masses) and a radius of 150 109 m (equal to the Earth's distance from the sun).
a. 1.41 10-4 kg/m3
b. 0.007 kg/m3
c. 1.41 kg/m3
d. 710 kg/m3
e. 1.41 10-3 kg/m3

Question 2

The density of an object is defined as:
a. the volume occupied by each unit of mass.
b. the amount of mass for each unit of volume. c. the weight of each unit of volume. d. the amount of the substance that has unit volume and unit mass.
e. the amount of the substance that contains as many particles as 12 grams of the carbon-12 isotope.