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The Sun is the most important star from our point of view. It is the only star close enough to be studied in considerable detail. The grandeur of the Sun is partly because of its size. Its diameter is almost 110 times that of the Earth. We can best visualise the volume of the Sun if we realise that more than a million earths can be dropped into the space it occupies. As we have said above, the mass of the Sun is about 2 X 1033 grams, which makes it more than 300,000 times the mass of the Earth. The average density of the Sun, i.e.. its mass per unit volume, is about 1.4 g/cm3.
Although the Sun appears to be unchanging, it rotates about its axis once every 25 days. From time to time dark patches appear on the surface of the Sun, usually in pairsor in groups. These dark patches are called sunspots. Their movement is an indication of the Sun's rotation. This fact was recognised for the first tiine by Galileo. Actually, a sunspatis a regiim cn the surface of the S& that consists of gases almkt 10000c cooler than those surrounding the area. The number of sunspots increases and decreases in a cyclc every 11 years. In the long term, there are periods of low number of sunspots and High'number of sunspots.
What is the Effect of the Number of Teeth with regards to Rotation?
Explain the Rectum and Anal Canal Rectum: This is a slightly dilated part of the colon. It leads from the pelvic colon. Anal canal: This is a short canal which leads fro
Which are clouds formed at the highest altitude: cirrocumulus
A solid compound whose internal structural pattern is expressed as plane faces that can be seen with the unaided eye is generally called as a: Crystal
Explain Monocytes - Types of White Blood Cells They are motile and occasionally show phagocytic activity. They form only 5% of leukocytes, capable of providing more phagocytic
Occurrence and characteristics of earthquakes
Consider the following data for ethylene hydrogenation to ethane in a batch reactor: C 2 H 4 + H 2 → C 2 H 6 The reaction may be considered to be first-or
Evaporation Highly volatile liquid wastes could be disposed of by effective ventilation. Example : Diethyl et-her. Moderately volatile liquid wastes can be absorbed on
Explain ABO Blood Grouping System As the name suggest, this is based on the presence or absence of 9 antigens A and B, on the surface of RBC. If either of these antigens is pr
Hey, I have to ask an expert questions for an assignment and I was wondering since you have a degree in botany how would a multi vitamin affect a plant?
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