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This week’s questions

Why accidental tear of cloth invariably takes an L shaped form?

K. Rajaganapathy, Bhadravathi

Why does sonic boom (energy bursting) occur when an object enters from sub sonic speed to super sonic speed?

Keerthan Karkada, Shimoga, Karnataka

Unlike mobile phones, landline phones do not have batteries. Why?

Midhun Manamel, Kochi, Kerala

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