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a. How many ion pairs are produced in 1 cm3 of air during an exposure of 100 mR? The density of air at STP is ρ = 1:293kg m-3. What is the absorded dose to air?
b. An thin walled carbon-wall ionization chamber, whose volume is 2 cm3, is filled with standard air at 0°C and 760 mmHg and is placed inside a tank of water to make a depth-dose measurement. A 25 MeV electron beam produces a current of 0.02 μA in the chamber. If the mass stopping power of water at the depth of measurement for 25 MeV electrons relative to air is 1.068, what is the dose?
State about the carbonaceous and nitrogeneous materials The basic ingredients of these are either animal or human excreta containing microorganisms which decompose carbonaceous
Types of Resource Maps: Generally, several types of maps, based on the type of.resburces, are prepared. Some of these are: Soil Maps showing the types of soil, their comp
Explain Major Histocornpatability Complex (MHC) Major histocompatability complex is also known as the Human Leukocyte Antigen (HLA). MHC molecules are important components of t
Define the term Bel Bel, the unit of measurement of sound, is named after Alexander Graham Bell; Bell was the inventor of the telephone, but for some curious reason, is spelt w
Define age related changes in Endocrine system There is a decrease In blood concentration of the hormone / binding protein transport. Sensitive hormone receptors diminish. Age-
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I need an idea for a science project with apples
State the process of Formation of Acid Soils The soil acidity is mainly caused by hydrogen and aluminium ions, depending upon the degree of existing soil acidity. At very low p
modes of nutrition and their examples
Which is the largest reef? This is the Great Barrier Reef off the northeast corner of Australia.
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