Mass is unique property of an object. Mass is measure of how much matter an object has. It is independent of place, time and person. Weight as the force exerted on a body by gravity. It is a measure of how strongly gravity pulls on that matter. If mass on of a body is m … Read more
What do mean by 50J work? 50J work means, if a force of 1N is applied on a body, the body will get a displacement of 50m. Again, it can also be said that, if a force of 50N is applied on a body and the body gets a displacement of 1m, the amount of … Read more
Why a heavy weight is easy to lift in water? In water, an upward force or buoyancy acts on any heavy object. For this reason a heavy object appears lighter when immersed in water and it becomes easy to lift it. Air is at rest will absorb same heat from our body. But being wet … Read more
Why we do not feel the atmospheric pressure? The blood pressure inside our body is slightly larger than atmospheric pressure and the pressure acts along every direction equally. That’s why we don’t feel any pressure.
What is called the apparent expansion of liquid? The expansion of the liquid without considering the expansion of the container is called apparent expansion.
What is Torricelli’s vacuum? If a one meter long glass tube opened at one end filled with mercury is put into a mercury filled container invertedly and perpendicularly due to air pressure the mercury level comes down. At a certain level it becomes steady which means a portion of tube’s upper area becomes vaccum. This … Read more
If an object is put into still water and the amount of replaced water by the object is less than objects mass it will down, if the replaced water has same mass as the object it will float while its body will be fully drowned. Again, if the amount of replaced water is more than … Read more
The conditions of the floating or sinking of an object are- If W1>W2, or if the weight of the object is more than liquid abstracted by the object then the object will sink in the liquid. If W1=W2, or if the weight of the object is equal to the liquid abstracted by the object will … Read more