If volume percentage of N2 is 78.than weight percentage of the same is
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A particle has a displacement of 40m along OX in the first 5s and 30m perpendicular to OX in
the next 5s. The magnitude of average velocity of the particle during the time internal of 10s is
a) 6 ms–1 b) 7 ms–1 c) 8 ms–1 d) 5 ms–1 [
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