Two stars have the same diameter and are at the same distance from us (but in different parts of the sky.) Star A has a temperature of 4000 K, while star B has a temperature of 8000K. Which of the following statements is true: A. the two stars have the same total energy flux (luminosity) B. star B has twice the energy flux (luminosity) that star A has C. tar B has one half the energy flux (luminosity) that star A has D. star B has 16 times the energy flux (luminosity) that star A has

Question

04-02-2020
Geography

contestada

Two stars have the same diameter and are at the same distance from us (but in different parts of the sky.) Star A has a temperature of 4000 K, while star B has a temperature of 8000K. Which of the following statements is true: A. the two stars have the same total energy flux (luminosity) B. star B has twice the energy flux (luminosity) that star A has C. tar B has one half the energy flux (luminosity) that star A has D. star B has 16 times the energy flux (luminosity) that star A has

Respuesta :

Otras preguntas

In such a spirit on my part and on yours we face our common difficulties. uses analogy. uses metaphor. establishes the speaker's authority. appeals to logic. tr

Which of the following BEST describes what rhetoric is? 1. the art of telling stories 2. the art of selling something they don't want 3. the art of persuading p

In "The Tall Woman and Her Short Husband," which of the following best describes how most of the residents in Unity Mansions felt about Mrs. Tall and Mr. Short

a rectangular floor is 12 feet wide and 18 feet long. How much will it cost to carpet the floor if the carpet cost $1.39 per square foot?

You are going to roll two dice. Let the variable x = the sum of the numbers rolled. What is the probability that x = 9 ?

England and Canada have what cultural characteristic in common?A. A majority of the population in both is Roman Catholic.B A majority of the population in both

what are the hardships that new York has to overcome

the goal of the historian is to create accounts of events

Germany, Italy, and Japan formed an alliance called the

an interior designer is creating a plan for a new indoor play park why does he decide to use red as a main part of the color scheme

ogechukwubenedict ogechukwubenedict · Answer 1 · 2020-02-04T07:56:23+01:00

Answer: D. Star B has 16 times the luminosity of star A

Explanation: This is best explained by the Stefan-Boltzmann law. The Stefan-Boltzmann Law states that the power radiated by an object of area A and temperature T is

P = σ AT^4

Stars A and B have the same diameter which suggests that they have the same area, but star B is hotter than star A in the ratio of 2 to 1, meaning it has a higher temperature and radiates more. But by how much? This is calculated by taking both ratios using the Stefan-Boltzmann law.

P = (σ AT^4 of star B) / (σ AT^4 of star A)

P = (8000^4) / (4000^4) = 16

Option D is correct