51. Why is it difficult to breathe at higher altitudes?
52. The Hydraulic Break works on the principle of ________ .
53. Hydraulic brakes work on the principle of
54. What principle/law explains the working of the hydraulic brakes in automobiles ?
55. Air moves from the region where the air ________
56. The hydraulic brakes used in automobiles is a direct application of :
57. If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is
58. For which of the following game, players must have the knowledge of Pascal's law?
59. Air pressure is usually highest when the air is
60. Which process allows water to enter the atmosphere?
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