Physics
Fluid-Mechanics
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Question

Water from a tap at the end of horizontal pipe emerges vertically downwards with an initial speed of 1 m s to the power of negative 1 end exponent. The cross section of the pipe is 10 to the power of negative 4 end exponent cm squared at the top. If the pressure of the stream is constant throughout, the area of the stream 0 -15 m below the tap is

  1. 5 cross times 10 to the power of negative 4 end exponent m squared
  2. 10 to the power of negative 5 end exponent m squared
  3. 5 cross times 10 to the power of negative 5 end exponent straight m squared
  4. 2 cross times 10 to the power of negative 5 end exponent straight m squared

The correct answer is: 5 cross times 10 to the power of negative 5 end exponent straight m squared


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