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Radiography and depletion of Ozone layer:
What is Radiography?
A. The method in which soft X-rays are used in medical diagnosis is called radiography.
What are the uses of Hard x-rays?
A. Hard x-rays are used to determine the structure of materials and to test the materials in industry.
What is the reason of depletion of Ozone layer in atmosphere?
A. The ozone layer is depleted due to the Chemical reactions with fluoro carbons released from aerosol sprays, refrigeration equipments and other pollutants.
State and explain laws of transverse vibrations in stretched strings. Describe how do you verify them using sonometer.
essay writting
An ostrich can run at speeds of up to 72km/h. Suppose an ostrich runs 1.5km at the speed of 58 km/h and then runs another 1.5km at the speed of 29km/h. What is the ostrich average
A confined quantity of air undergoes two thermodynamic processes departing from an initial equilibrium state where the temperature is 20°C, the absolute pressure is 1bar, and the v
An electric iron draws a current of 0.5A.The voltage is 200V. Calculate the amount of charge flowing through it in 1 hour.
Integration Integration is an significant concept in mathematics and, together along with its inverse, differentiation, is one of the two major operations in calculus. Given a
what is the meaning of heat capacity
A worker lifts a 10 kilogram block a vertical height of 2 meters. The work he does on the block is: a) 5 Joules b) 20 Joules c) 49 Joules d) 200 Joules Ans:
Explain Buoyancy in Air The same buoyancy happens in air. This is how hot air balloons fly. By heating the air and lowering the density of the air in the balloon, the balloon f
Define the Tea in Thermos? One liter of tea at 90° C is poured keen on a vacuum-insulated container (thermos). The surface area of the thermos walls A=600 cm 2 . The volume am
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