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Physics (AS & A Level) · Oct / Nov 2016 · Paper 13 · Question 14

9702Density and pressure

A submarine has circular windows of diameter 0.30 m. The windows can experience a maximum external pressure of 660 kPa before they crack. What is the minimum external force needed to crack the windows?

  1. A47 000 N
  2. B190 000 N
  3. C310 000 N
  4. D620 000 N

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Correct answer: A. 47 000 N

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