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प्रश्न
The unit of thrust is ..........
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उत्तर
newton.
The unit of thrust is newton .
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संबंधित प्रश्न
Toricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984 kg m–3. Determine the height of the wine column for normal atmospheric pressure.
Two vessels have the same base area but different shapes. The first vessel takes twice the volume of water that the second vessel requires to fill up to a particular common height. Is the force exerted by the water on the base of the vessel the same in the two cases? If so, why do the vessels filled with water to that same height give different readings on a weighing scale?
A sharp pin works better than a blunt pin. Explain the reason.
Water flows through a horizontal tube of variable cross section. The area of cross section at A and B are 4 mm2 and 2 mm2 respectively. If 1 cc of water enters per second through A, find (a) the speed of water at A, (b) the speed of water at B and (c) the pressure difference PA − PB.
It is difficult to cut cloth using a pair of scissors with blunt blades. Explain.
Give reasons why:
cutting edges of knives and axes are sharpened.
The pressure in mines is ______ than the sea level.
What is the SI unit of pressure?
What happens when pressure is increased in solids?
Assertion (A): Wide wooden sleepers are kept below railway lines to reduce pressure on the railway tracks and prevent them from sinking into the ground.
Reason (R): Pressure is directly proportional to the area in which it is acting.
