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What is the surface temperature of Draco the constellation?
each different star in the constellation (there are 13) would have a different surface temperature, which is based on what phase of stellar life they are in and how massive they are
If a star has a large luminosity and also a low surface temperature then it must have?
If a star has a large luminosity and a low surface temperature, it must have a large surface area to compensate for the low temperature and still emit a high amount of energy. This would make the star a red supergiant, a type of star that is both luminous and cool at the same time.
How can a cool star be more luminous than a hot star?
Luminosity is related to temperature and distance.A cool and thus less luminous star would be brighter than a more luminous star at a greater distance.Our Sun is a relatively cool star in comparison to say Rigel, but because it is closer it appears more luminous and brighter.
Suppose there are two stars A and B with the same luminosity. If star A is larger then star B then we can conclude that?
A The temperature of star B is lower B The temperature of star A is lower C Star A is more massive D Star B is more massive E Not enough information to conclude anything
Why is Betelgeuse cool but gives off massive amounts of light?
When talking about stars, "cool" is a relative term. Betelgeuse has a variable surface temperature of 5,200 to 6,100 degrees Fahrenheit. Such a temperature may seem extremely hot to us and is easily hot enough to emit bright light but it is fairly cool as stars go. The comparatively low temperature of Betelgeuse means that it gives off less light per square meter than a hotter star would, but it makes up for it with its massive size, more than 900 times the diameter of the sun. As massive size means a large surface are and thus a huge output of light.
What is the surface temperature of Draco the constellation?
each different star in the constellation (there are 13) would have a different surface temperature, which is based on what phase of stellar life they are in and how massive they are
If a star has a large luminosity and also a low surface temperature then it must have?
If a star has a large luminosity and a low surface temperature, it must have a large surface area to compensate for the low temperature and still emit a high amount of energy. This would make the star a red supergiant, a type of star that is both luminous and cool at the same time.
What is the temperature of night on Saturn?
Saturn is the gas Giant with tiny core deep down the atmosphere. Surface temperature of Saturn is govern by its' thermodynamic cycle of rise and sink of massive gases. I believe, the surface temperature at the reference surface would not be of any great difference may be 10,000 oC with insignificant difference of day and night.
How can a cool star be more luminous than a hot star?
Luminosity is related to temperature and distance.A cool and thus less luminous star would be brighter than a more luminous star at a greater distance.Our Sun is a relatively cool star in comparison to say Rigel, but because it is closer it appears more luminous and brighter.
If a 72 candela light source is located at a distance of 3m from a surface the illuminance on the surface is?
To calculate illuminance (lux) on a surface due to a point light source, you can use the formula: illuminance = luminous intensity / (distance)^2. Plugging in the values given (luminous intensity of 72 cd and distance of 3m), the illuminance on the surface would be 8 lux.
Suppose there are two stars A and B with the same luminosity. If star A is larger then star B then we can conclude that?
A The temperature of star B is lower B The temperature of star A is lower C Star A is more massive D Star B is more massive E Not enough information to conclude anything
When a lamp is turned off is it luminous or non-luminous?
If the bulb is switched off, then we would call it non-luminous.
What does Venus need to have life on it?
For life to exist on Venus, the planet would need significant changes to its environment. This would include lowering its surface temperature, establishing a stable atmosphere with suitable conditions for life, such as oxygen and water, and shielding the surface from the planet's harsh radiation. It would be a massive undertaking to make Venus hospitable for life as we know it.
How does a forest affect temperature?
The influence of a forest on temperature. The forest can lower the surface temperature on the surface during the season. The cool surface temperature allows for the growth of some vegetation that would not grow in the unprotected heat of the sun.
What conditions would a flame become luminous?
A flame becomes luminous when it reaches a high enough temperature to emit visible light. This usually occurs when the flame is fuel-rich and produces soot particles that glow as they burn. They can also become luminous in the presence of certain chemical compounds, such as salts, that emit colorful light when heated.
Why is Betelgeuse cool but gives off massive amounts of light?
When talking about stars, "cool" is a relative term. Betelgeuse has a variable surface temperature of 5,200 to 6,100 degrees Fahrenheit. Such a temperature may seem extremely hot to us and is easily hot enough to emit bright light but it is fairly cool as stars go. The comparatively low temperature of Betelgeuse means that it gives off less light per square meter than a hotter star would, but it makes up for it with its massive size, more than 900 times the diameter of the sun. As massive size means a large surface are and thus a huge output of light.
What effect would thick clouds have on the temperature of Earth's surface?
It would block out significant sunlight, lowering the temperature.
