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Rockets or Launch Vehicles:
Every flight into space begins with a rocket launching. The rocket can lift a satellite or spaceship carrying human beings and equipment into space. Therefore, it is also called launch vehicle. The rocket has been known to mankind for centuries. Rockets used as firecrackers are a common sight on festive occasions in our country. But the rockets that launch space whicles use highly advanced technology, and, of course, they are far more
When the fuel in the rocket is set tofire, a stream of hot gases is expelled at a high speed from its rear end (Fig). As ireaction to the thrust of the,gases, the rocket moves in the opposite direction. As long as the fuel in the rocket burns, shooting out gases, the rocket continues to accelerate forward, and acquires great speed. No single rocket fired from the earth can attain in one go the high speeneeded to orbit the earth, or to escape its pull. Higher speeds are reached by using big and small rockets, in stages. in the launch vehicle. As the large rocket soars into space and uses up its fuel, lt IS separated from the smaller rocket and drops off. The smaller rocket already going at high speed is then fired to accelerate it to an even higher speed. Three-stage rockets are usually able to achieve speeds suitable for most purposes in space (Fig). The final stage of the launch vehicle carries the payload. Activity Verify the principle of rocket motion by releasing an inflated balloon with its neck open. The different kinds of payloads that rockets carry into space include artificial satellites and space probes to nearby heavenly bodies. The satellites and probes themselves carry communication and research Quipment.
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
Hormonal system: Most of us are not even aware that another system works constantly, along with the nervous system and the muscles, to direct our bodily functions. The system
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Primary processing of Rice Rice is the staple food for the majority of the world's population and is cooked in boiling water and eaten mostly with cooked pulses, vegetables, f
1. If the landfill had a compacted density of 600 Kg/m3 a refuse depth of 9 m (29.5 ft), a moisture content of 20% by volume, and a 1-m (3.25-ft)-thick clay cover with a 2% slope
Define the Absorption of Amino Acid Proteins are absorbed in the form of amino acids. Amino acid transport occurs 'only in the presence of simultaneous sodium transport. Carrie
Define the auditory area of the Cerebrum The auditory area lies immediately below lateral sulcus within the temporal lobe as can be seen in Figure. Cells receive and interpret
Flammable Liquids : Previously, the word flammable has the same meaning as inflammable. Flammable liquids are those liquids or mixtures of liquids or liquids containing solids in
Give reason for the benifits of our technological development not reaching all the strata of our society.
Define the Gene Activation - Mechanism of Hormone Action A second important way by which the hormone affects cell function is gene activation. This is the mechanism of hormonal
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