Friendship When I am lonely I feel sad by this tension I think I will be mad I thought that friend were nothing But today i realize that they are everything Sometimes when I am lonely I feel boar But,today i know that we need Friends more and more I feel my life is locked in prison the breaking of friendship is only the reason today I sit and cry so, I think it's better to die
Archimedes' Principle Archimedes' principles state's that when an object is immersed in a liquid partially or completely it looses the weight equal to the weight of displaced liquid or upthrust acting on it, i.e. loss of weight in liquid =weight of displaced liquid =up thrust take a stone and tie to the hook of spring balance and measure it weight in air. Suppose the weight of stone is W1 . Take an the overflow can filled with water up to it's spout. Place an empty beaker just under the spout of the can on the top of pan balance and note it's weight W2 . The stone is then immersed in the water of overflow can and measure it's weight in water. Suppose W3 .the water which is displaced by the stone is collected into the beaker . Suppose the weight of displaced liquid with beaker W4 . Now here, loss of weight in water= up thrust = W1-W3 Weight of...
Heart Heart main part of the blood circulation system. It is roughly conical in shape and located in the middle of the chest cavity. It is made up of thick cardiac muscles. it is covered by a double-walled membranous sac called pericardium. In this sac, there is a liquid called pericardial fluid which protects the heart from shock. The human heart consists of four Chambers. The Upper to Chambers are auricles and lower two chambers are called ventricles. The Heart is divided into left and right part by spectrum. Two large veins called superior vena cava and inferior Vena cava opens to right auricle. A valve named tricuspid valve is present between the right auricle and right ventricle. It lets the blood flow from the right auricle to right ventricle but not in the opposite direction. Pulmonary artery originated from the right ventricle and growth towards the lungs. The pulmonic valve is present between the Pulmonary artery and right ventricle. ...
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