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A model reaction water turbine
Use a soda water bottle from which the bottom has been separate. Wind string around it near the bottom end and suspend it as shown in the diagram. Fit a two-hole stopper to the neck of the bottle. By the holes place glass tubes that have been bent as shown and have their ends drawn out to jet tubes. Fill the bottle with water and view the turbine rotate as the water runs from the jets
How has the earth changed since it was formed? Ans) The earth has changed particularly since it was formed. Earth was a ball of rock that was strike and changed by loads of imp
Method of science: We have seen above that science is an enaeavour to understand nature and to mould it to satisfy human needs. In earlier units we have seen that, in this pr
Write an essay to answer the following question: How can social scientists explain human behaviour scientifically?Discuss the merits and limitations of the applications of the sci
Define the role of Bacteria in soil flora The most abundant soil organisms are primitive, very minute, unicellular organisms devoid of chlorophyll. Bacteria are most abundant i
Differentiate between soil water content and plant available soil moisture. The mass of water lost relative to mass of dry soil is called soil water content whereas plant avai
glutamic acid standard estimation protocol
Explain the Transfusion of Blood Blood has been considered as the elixir of life. However, in ancient times, patients were bled to get rid of their foul fluid. Later, as blood
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.
explain the factors that led to the decline of science in europe during iron agen..
1. Define potential and kinetic energy. 2. State the first and second laws of thermodynamics. 3. Explain how organisms tend to defy the second law of thermodynam
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