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What are stars with low magnitude low temperature and low absolute magnitude?
This probably refers to red dwarves. The apparent magnitude depends on the distance, as well as the absolute magnitude, but even the closest red dwarves can't be seen with the naked eye.
Examples of scalar quantities?
length,area,volume,speed,mass,density,pressure,temperature,energy,entropy work,power & charge.
How are the brightness and temperature related?
brightness and temperature are both related because brightness is actually tempature. However the system has become more refined. Instead of just looking at the star and determining magnitude one or magnitude two, an astronomer measures the brightness of the star using a device called a photometer. The photometer counts the number of photons coming from the star. This photon count is then compared to the photon count from a star whose magnitude is known. An accurate magnitude can then be calculated.
What is the relationship between magnitude and the surface temperature of the stars?
The magnitude of a star, which indicates its brightness, is related to its surface temperature through the concept of stellar luminosity and the Stefan-Boltzmann Law. Generally, hotter stars emit more energy and thus appear brighter, resulting in lower magnitude values. This relationship is often visualized in the Hertzsprung-Russell diagram, where hotter stars (with higher surface temperatures) are typically found in the upper left region, showing greater luminosity compared to cooler stars. Therefore, as surface temperature increases, the magnitude typically decreases, reflecting greater brightness.
The distances to nearby stars can be measured by using . a. absolute magnitude c. color b. temperature d. parallax?
preallax
What is true about the absolute magnitude and temperature of supergiant stars?
Absolute magnitude: they are extremely bright. Temperature: their surface temperature is fairly low.
How does a star's temperature affect its absolute magnitude?
The absolute magnitude of a start will increase both:* If its surface temperature increases, and * If its diameter increases.
Varying cause wind?
temperature or magnitude
What quantity has a magnitude but no direction?
scalar
Is temperature a scalar quantity?
No, temperature is a scalar quantity. It only has magnitude and no direction.
Is a scalar just magnitude?
Yes, a scalar is a quantity that has only magnitude and no direction. Scalars are described solely by their size or magnitude. Examples include temperature, mass, and speed.
What is a value that only has magnitude?
A scalar is a mathematical quantity that has magnitude but no direction, such as temperature or speed. Scalars are represented by a single numerical value.
Is a quantity which posseses magnitude but not direction?
Scalar quantity is a quantity that possesses magnitude but not direction. Examples include mass, temperature, and speed.
What is a graph that shows relationship between a stars magnitude and temperature?
The Hertzsprung-Russell (HR) diagram is a graph that shows the relationship between a star's magnitude (luminosity) and temperature. It plots stars based on their color (temperature) and brightness (magnitude), allowing astronomers to classify stars and understand their evolutionary stage.
What are stars with low magnitude low temperature and low absolute magnitude?
This probably refers to red dwarves. The apparent magnitude depends on the distance, as well as the absolute magnitude, but even the closest red dwarves can't be seen with the naked eye.
Which out of acceleration age speed temperature and velocity are vector quantities?
Acceleration and velocity are vector quantities because they have both magnitude and direction. Speed and temperature are scalar quantities because they only have magnitude.
What are the main components of the h-r diagram?
Surface temperature and Absolute magnitude
