railuke2844 railuke2844
  • 23-01-2024
  • Physics
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A point tube is mounted on an aeroplane wing to measure the speed of the plane. The tube contains alcohol and shows a level difference of 40 cm. What is the speed of the plane reative to air ? (sp. Gr. Of alcohol = 0.8 and density of air = 1 kg m⁻³).

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