Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ?
a. location where they are formed
b. luminosity they are formed with
c. the color they are formed with
d. the mass they are formed with

the correct option is D(the mass they are formed with).

Explanation:

The formation of star occurs due to accumulation of gas and dust which collapses due to gravity and starts to form stars. The components of star includes:

- hydrogen( which is converted to helium in the cores of the star),

- carbon,

- nitrogen,

- oxygen and

- iron

All stars begin their lives with the same basic composition, but the characteristic that most determines how they will differ is

the mass they are formed with since most stars have small amounts of heavier elements( carbon, nitrogen, oxygen, iron) than others.

λ = 28,14 m

Explanation:

To find the wavelength of the wave you use the following formula:

 (1)

v: speed of the wave = 1,97 m/s

λ: wavelength

f: frequency of the wave = 0,07 Hz

You replace the values of v and f in the equation (1) and solve for λ:

hence, the wavelength of the wave is 28,14 m