four simple machines

Simple Machines - In all the above examples, a machine either multiplies or reduces the effect of the force that is applied. A bicycle is a machine which is used to gain speed. We gain speed by exerting additional force. When we try to ride a bicycle up a ste..

A bicycle is a machine which is used to gain speed. We gain speed by exerting additional force. When we try to ride a bicycle up a steep hill, we soon realize that we gain speed by applying greater force. It is impossible to multiply both the force and gain the speed at the same tim..

Before surgeons can perform open-heart surgery or heart transplants or even to correct a simple heart defect, they have to be able to open up the heart and expose the chambers. To enable this, circulation and respiration are maintained by the heart - lung machine. The func..

Before surgeons can perform open-heart surgery or heart transplants or even to correct a simple heart defect, they have to be able to open up the heart and expose the chambers. To enable this, circulation and respiration are maintained by the heart - lung machine. The function o..

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Naming of Simple Compounds - Compounds formed by the combination of two different elements are called binary compounds. Example: CO, CCl 4 , H 2 S, NaCl, NH 3 , HBr. Binary compounds may be ionic or molecul..

Compounds formed by the combination of two different elements are called binary compounds. Example: CO, CCl 4 , H 2 S, NaCl, NH 3 , HBr. Binary compounds may be ionic or molecula..

Optics..

Wave Motion and Sound..

Oscillations..