Question

A speed of dust weighs 1.6×10^-10 kg .How many such particles would weigh 1.6 kg

Answer 1

Explanation:

weight of 1 particle = 1.6×10^-10

weight of n particles = n× 1.6×10^-10

therefore, No. of particles = n = 1.6/1.6×10^-10=10^10 particles

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