71. The most important property of nanomaterial is
72. According to Archimedes principle, the upward force experienced by a body immersed in a fluid is equal to which of the following?
73. Center of buoyancy always-
74. Consider the following statements.
1. Surface tension of liquid depends on length but not on the area, like the elastic property.
2. SI unit of surface tension is N/m.
3. Surface tension is a scalar quantity because it has no specific direction for a given liquid.
Which of the statement(s) given above is/are correct?
1. Surface tension of liquid depends on length but not on the area, like the elastic property.
2. SI unit of surface tension is N/m.
3. Surface tension is a scalar quantity because it has no specific direction for a given liquid.
Which of the statement(s) given above is/are correct?
75. The clouds float in the atmosphere because of their low
76. If ice floating on water in a vessel melts, the water level in the vessel . . . . . . . .
77. The pressure of the earth's atmosphere at sea level is due to the
78. When a ship enters a sea from a river, what happens?
79. Upthrust force and weight of object would be-
80. What would be the force generated by a wall on which water strike normally at a speed of 10 m/s and at a discharge of 0.0001 m3/sec?
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