Can someone please answer this pleaseee!!!!!!!!

Which statement correctly explains how the Hertzsprung-Russell diagram helps to compare stars?

tekilochka [14]

Answer:

The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.

Explanation:

The Hertzsprung-Russell is a diagram representing:

- The surface temperature of the stars on the x-axis

- The absolute luminosity of the stars on the y-axis

So, the H-R diagram shows the relationship between the luminosity (power output) of a star and its temperature.

Most of the stars in the diagram are located along a diagonal line going from the top left to the bottom right: the stars in this diagonal are the stars in the main sequence, which is the main phase of life of a star.

Also, the graph shows that for stars in the main sequence, as the temperature increases, the luminosity also increases: these are the blue supergiant stars located in the top left corner.

Then, apart from the main sequence line, there are other groups of stars located in the top right corner (red giants) and in the bottom left corner (red, white dwarfs).

So, the correct answer is

The Hertzsprung-Russell diagram plots stars according to their luminosity and temperature, which is also associated with spectral class.

4 0

4 years ago

Good Afternoon my son has a science project the category is Physical science can you'll give me science Ideas he can do I'm New

Naddik [55]

As a experiment you could use is The affect of light in plants. A study He can do is maybe about Gravity affects and how it works on weight. Also you can do a all time favorite the Mentos and Diet Coke Experiment.

Hopefully one of these ideas will inspire you!

7 0

4 years ago

Read 2 more answers

Consider a cylindrical specimen of some hypothetical metal alloy that has a diameter of 8.0 mm. A tensile force of 1000 N produc

Dimas [21]

Answer:

1.7 × 10^11 Pa

Explanation:

Please see the attachments below

3 0

3 years ago

. Si mi mejor amigo vive a 100 metros de mi casa (una cuadra aproximadamente) y sabe qué cuando pongo una canción determinada es

Damm [24]

Answer:

Nuestro mejor amigo escuchará la música más rápido a una temperatura de 36 ºC (309.15 K)

Explanation:

Supongase que el aire se comporta como un gas ideal y que experimenta un proceso adiabático, entonces la velocidad del sonido ( $v$ ), medida en metros por segundo, queda traducida en la siguiente fórmula:

$v = \sqrt{\frac{\gamma \cdot R_{u}\cdot T}{M} }$ (1)

Donde:

$\gamma$ - Coeficiente de dilatación térmica, sin unidad.

$R_{u}$ - Coeficiente universal de los gases ideales, medido en kilogramo-metros cuadrados por mol-Kelvin-segundo cuadrado.

$T$ - Temperatura, medida en Kelvin.

$M$ - Masa molar, medida en kilogramos por mol.

Como se puede ver, la velocidad del sonido es directamente proporcional a la raíz cuadrada de la temperatura. Por tanto, nuestro mejor amigo escuchará la música más rápido a una temperatura de 36 ºC (309.15 K)

3 0

3 years ago

What is the difference between a series circuit and a parallel circuit?

Angelina_Jolie [31]

Parallel has more than one circuit or form of energy

series has only one form of energy circuit

6 0

3 years ago