Physics
What is the range of masses involved in the study of Physics?

10-19 kg to 1038 kg
10-19 kg to 1055 kg
10-30 kg to 1030 kg
10-30 kg to 1055 kg

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Physics
Stationary wave is formed by

Two waves of the same speed superposing
Two waves of same frequency travelling in the same direction
A transverse wave superposing a longitudinal wave
Two waves of same frequency travelling in the opposite direction

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