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AVERAGE ACCELERATION: The total change in velocity of a body separated by total time taken is known as average acceleration. It is denoted by a ? av or .
Difference among sound and light waves: (i) For propagation of sound rays material phase is required but no material medium is needed for light waves. (ii)Sound rays are long
VANDER WAALS BOND: A fourth type of bonding, which does not involve a transfer or sharing of electrons, is known as the Vander walls bond. It forms in atoms or molecules that b
An ice-skater with a mass of 75.0 kg pushes off against a second skater with a mass of 42.0 kg. Both skaters are initially at rest. After the push, the larger skater moves
A circular hole of radius r at the bottom of an initially full water container is sealed by a ball of mass m and radius R (>r). The depth of the water is now slowly decr
1. A given radioactive sample emits only one type of radiation. When placed in a counter for 10 minutes, 1632 counts are registered. Then the sample is removed and a background
what is virtual displacement?and how is it different from actual displacement?
Explain the Machine A machine is anything that makes work easier. Does it do the work for you? No, you don’t get something for nothing in this world, but it can make the work e
Can fibers be bent at right angle? Fibers cannot be bent at right angle. All fibers should be bent with a radius that will not alter the internal architecture of the fiber. For
What is artificial transmutation? Describe the experiment that led to the discovery of artificial transmutation? Why only high energy α - Particles were used in the discovery of a
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