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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.
#question: Describe the factors which decide the broad area of Scientific activity ?
From the start of this course, we have emphasized the importance of research in shaping our understanding of human behavior and mental process. Several major studies and social psy
a ray of light falls on a transparent slab of refractive index u.if the reflected and refracted rays are mutually perpendicular to each other,find the angle of incidence.
ACTIVITY 1 TO CALCULATE CURRENT DRAWN BY THE GIVEN APPLIANCES AND SUGGEST PROPER FUSE RATING AND PLUG TYPE Here , you hence learnt how to calculate the current drawn by an
Explain somatic mutation theory of ageing Random mutation makes the cells inefficient. An increase in the number of mefficient cells in an organ impairs their functioning. Rand
Lasers : Laser light is an extremely intense form of electromagentic radiation and its name is acronym for light amplification by stimulated emission of radiation. Lasers are us
Define The Large Intestine The large intestine or colon is about five feet long. It begins at the caecum and terminates at the rectum and anal canal. It is divided into a numbe
We know from Shannon's Theorem, Maximum data rate of a channel in bps (B) = Hlog2 ( 1+S/N ) _ 1 Where H = bandwidth in Hz S/N = signal-to-noise ratio We also know that Db = 10log10
formulation of RDA
Explain how the uterus supports the development of a baby during gestation.
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