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< Health & diseases-immunity system
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16. Study of antigen – antibodyes in the blood is
a) Seriology b) Compatibility
c) Immunology d)'a' and 'b'
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Answer 1

period on the earth attracts objective of this is due to the gravitational force whenever object faltu are the Earth on the source alone we say that object are in free fall change in the velocity of an object while falling there is no change in the direction of the motion of object due to our attraction there will be a change in the magnitude of the philosophy and change in velocity in was acceleration whenever an object for squats for an acceleration is involved is acceleration is due to the earth's gravitational force therefore this acceleration is called acceleration due to the gravitational force of the earth acceleration due to gravity it is a noted by G unit of G is the same as that of the acceleration that is am as ki power minus 2 we know from the second law of motion that the force of product of mass and acceleration let the mass of the stone in activity 10.2 BM you already know that there is acceleration involving falling object due to the gravitational force and is generated by Jeet therefore the magnitude of the gravitational force ever be equal to the product of the mass and acceleration the gravitational force that is f is equal to MG mg is equal to GM into small and by the square is equal to GM Badi square Where am is the mass of the earth and the is the distance is an object and the earth flat and object be on linear equation of the earth the distance D in will be equation to are the radius of the earth the Spa object and the mayor's office of the Earth is equal to M is equal to 6 cm into m bi R square is equal to 6 CM square

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