Advertisements
Advertisements
प्रश्न
A drinking straw works on the existence of ______.
उत्तर
A drinking straw works on the existence of Pressure.
APPEARS IN
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?
The unit of thrust is ..........
It is easier to cut with a sharp knife than with a blunt one. Explain.
A gum bottle rests on its base. If it is placed upside down, how does the thrust change?
In a pressure cooker, the food is cooked faster because ______.
It is difficult to cut cloth using a pair of scissors with blunt blades. Explain.
Hot air is ______ dense than ordinary air.
Upthrust = weight of the fluid displaced – apparent weight of the object.
A vessel filled with water is kept on a weighing pan and the scale adjusted to zero. A block of mass M and density ρ is suspended by a massless spring of spring constant k. This block is submerged inside into the water in the vessel. What is the reading of the scale?
