Roughly 12.57 times the square of its radius.
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β 12y agoWikipedia lists a surface temperature of 4300 K.
It is the surface area of the two ends plus the surface area of the curved surface. Surface area of each end is pir2 Surface area of the curved surface is 2pirh Total surface area = 2pir2 + 2pirh
To obtain the ratio of surface area to volume, divide the surface area by the volume.
The same volume of an object, The simplest regular tetrahedron polyhedron, calculate the surface area. The surface area is pentahedral small surface area than the regular tetrahedron Regular hexahedron surface area than the surface area is small pentahedral . . . . If it is known is N-face surface area of ​​the body, there are N +1 is smaller the surface area of ​​the surface When N tends to infinity for a long time, Serve the sphere surface. ------mecose
it is still surface area
Wikipedia lists a surface temperature of 4300 K.
Orange, red, or blue.
The temperature affects the color of a star.
To be bright you need to be hot, close or have a large surface area. The brightest coolest stars are red super giants. They have such a large surface area, that even though their surface temperature is cool - in star terms - their large surface area makes them appear bright.
No. I assume you mean the star's diameter. The area is proportional to the square of the area - so the bigger the star, the brighter it will be - other things being equal. However, the star's surface temperature also affects its brightness.
The bigger the star's radius, the greater its surface area which emits the light. The bigger the temperature, the more luminous is the light the star is emitting.
There are 2 main factors: the size of the star and its surface temperature. A larger size means a larger surface area to emit light. A higher surface temperature increases the energy emitted. Seen from Earth, the brightness of a star depends on how far away the star is as well as its actual luminosity.
They cannot be the same size. The red star must be larger. Red stars are cooler that blue stars and so radiate less energy for a given amount of surface area. In order to radiate the same amount of energy as a blue star, the red star must therefore have a larger surface area.
When a star tuns red it ceases to fuse hydrogen in its core and starts to fuse other elements (notably helium). When this happens the core shrinks but gets much hotter and the outer envelope of the star expands. This means that while the star is pumping out more energy this is happening over a wider area of surface so the temperature of any one area of the stellar surface is lower than it was before - and the star looks red.
the surface is wierd
The stars in the constellation Lupus have a range of surface temperatures, but typically they are in the range of 3,000 to 10,000 degrees Celsius. The exact temperature varies depending on the specific star within the constellation.
It is the surface area of the two ends plus the surface area of the curved surface. Surface area of each end is pir2 Surface area of the curved surface is 2pirh Total surface area = 2pir2 + 2pirh