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Q. Define roentgen and activity and Curie?
One roentgen (1R) is described as the quantity of radiation which produces 1.6 × 1012 pairs of ions in 1 gram of air.
The activity of a radioactive substance is described as the rate at which the atoms decay. Curie is described as the quantity of a radioactive substance which gives 3.7 × 1010 disintegrations per second or 3.7 × 1010 Becquerel.
Jet propulsion is made possible by action and reaction Fit a small cardboard stabilizer to the neck of a balloon by means of adhesive tape. Inflate the balloon, and close the m
The Szilard-Chalmers Reaction
Bug on a Bowling Ball A bug sitting on top of a bowling ball begins to slide o? with negligible friction. Conclude the angle at which the bug leaves the surface. This proble
A quantity that can be calculated by instrument, clearly defined and has proper units is known as physical value. Physical quantities are described as fundamental and derived quant
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Zehnder's balance This ingenious balance, which is very beneficial for demonstration experiments, can be constructed in a few minutes using pins, razor blade, cork and knitting
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Discharging: The cell is connected across some load during discharging. As the direction of current by the cell is reversed during discharging the negative ions go in the directio
A PROJECT REPORT ON A MODEL
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