A high luminosity star Study guides, Class notes & Summaries

A black car left in the sunlight becomes hotter than a white car left in the sunlight under the same conditions because - ️️the white car reflects more sunlight than the black car. A planet is detected via the Doppler technique. The velocity change of the star is a measure of - ️️the planet's mass and orbital distance. A planet will have bands in its atmosphere like Jupiter and Saturn if - ️️the planet has a high temperature. A prism is able to spread white light out into a spect...

Chapter 10 Questions and Answers 2024 The star Bernard's Star has an apparent magnitude of 9.5 and the star Lelande 21185 has an apparent magnitude of 7.5. Which one is brighter? By how many times? Lelande 21185 is the brighter star as the more negative the magnitude is, the brighter the object is. Subtract the two magnitudes and take the absolute value to get a positive answer. Then use that answer as the power on 2.512. |9.5-(+7.5)| =2| =2| 2.5 ^2 = 6.25 Therefore Lelande 21185 is about ...

Astro 102 Final Exam Ultimate Study Guide | 100% Correct Answers | Verified | Latest 2024 Version What are the characteristics of disk stars (yellow) of the Milky Way Galaxy? - High mass stars, the Sun, youngest stars, and stars that all orbit in nearly the same plane What are the characteristics of halo stars (green) of the Milky Way Galaxy? - Globular clusters, oldest stars, stars whose orbits can be inclined at any angle, and stars with smallest abundance of heavy elements. Wh...

A protostar's evolutionary "track" in the H-R diagram traces out - ️️how the protostar's luminosity and temperature change with time. A star's position in the H-R diagram is determined by its - ️️temperature and size. As a star becomes a red giant, how does it move on the HR diagram? - ️️upward and to the right Because angular momentum must be conserved, as a gas cloud contracts due to gravity it will also - ️️spin faster. Binary star systems are extremely useful in stud...

Edexcel A Level Physics (9PH0) Paper 2 Advanced Physics II Mark Scheme June 2022. Advanced Physics II. The only correct answer is A B is incorrect because the drag force increases as the skydiver falls through the air C is incorrect because the drag force increases as the skydiver falls through the air D is incorrect because the drag force increases as the skydiver falls through the air 2 The only correct answer is B A is incorrect because the relative refractive index for light travelling ...

Apparent and Absolute Magnitude Test Questions and Answers Absolute Magnitude cont... more - Answer-Stars more than 32.6 LY away appear dimmer than they are High apparent magnitude and low absolute magnitude If a star is 32.6 LY away, its absolute and apparent magnitudes will be the same. Hertzsprung-Russell (H-R) Diagram - Answer-Shows relationships between absolute magnitude and temperature of stars. Can also show the relationship between temperature and luminosity As temperature incre...

Astro 7N Exam 2 Questions with 100% Correct Answers | Verified | Latest Update 2024

To find the most accurate distance to a nearby star using parallax, astronomers could compare the view of the star against the background stars at what times of the year? - In January and July Which of the following correctly expresses the distance to a nearby star? - 1.3 parsecs Consider two stars (Y and Z) that both exhibit parallax. Star Z appears to move back and forth against the background stars by a greater amount than Y. Which star is farther away from Earth? - Star Y A star has a p...

Astronomy 102 Final Exam | 100% Correct Answers | Verified | Latest 2024 Version To find the most accurate distance to a nearby star using parallax, astronomers could compare the view of the star against the background stars at what times of the year? - In January and July Which of the following correctly expresses the distance to a nearby star? - 1.3 parsecs Consider two stars (Y and Z) that both exhibit parallax. Star Z appears to move back and forth against the background stars by a...

Which of the following relationships is the key to nuclear reactions in a star's core remaining under control? a. Luminosity depends on mass. b. Pressure depends on temperature. c. Density depends on mass. d. Weight depends on temperature. - b What is opacity? a. the balance between the pressure and force of gravity inside a star b. the force that binds protons and neutrons together to form a nucleus c. the temperature and density at which a gas will undergo thermonuclear fusion d. a...