Physics, 01.09.2019 08:20 Adolfosbaby

The color of a star is primarily determined by its composition size apparent brightness age surface temperature

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the color of a star is primarily determined by its : suface temperature. The surface temperature is used to estimate the wavelength that radiated within. the star with lower wavelegth tend to have purple-ish color, while the one with higher wavelength tend to have orange-ish color

Answer from: cassidy32504

The correct

The color of a star is primarily determined by its Surface temperature.

The explanation:

-Stars emit colors of many different wavelengths, but the wavelength of light where a star's emission is concentrated is related to the star's temperature - the hotter the star, the bluer it is; the cooler the star, the redder it is.

The surface temperature is used to estimate the wavelength that radiated within. the star with lower wavelength tends to have purple-ish color, while the one with higher wavelength tends to have orange-ish color.

For example, the really hot stars, called White Dwarf stars, have a white surface temperature, while a cooler star would have a more red color.

Answer from: Quest

answer;

d. are made mostly of liquid

explanation;

-the general composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

Answer from: Quest

5.5 n====== $\sum f = ma$ assuming that $\sum f = f_{app}$ we have m = 0.145 kg a = 38 m/s²therefore $f_{app} = (0.145\text{ kg})(38\text{ m/s}^2) = 5.51\text{ n}$ 5.51 n, but two significant figures.final answer: 5.5 n

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