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  1. The half-life of radioactive element is 600 yr. The fraction of sample
  2. A particle has initial velocity (3i + 4j) and acceleration (0.1 i+0.3j). It’s speed after 10s
  3. Given a sample of radium-226 having half-life of 4 days. Find the probability,
  4. The wave function (in SI unit) for a light wave is given as Ψ(x,t)= 10³ sin π
  5. The mean distance between the atoms of iron is 3 x 10⁻¹⁰ m and interatomic force