three 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..

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..

1. All bars have the same thickness. 2. Distance between two consecutive bars is the same. The bars can touch each other. 3. The height of each bar represents the frequency number of students. 4. The thickness has no significance. 5. Bar graphs are preferred when each item of data ..

Characters Parenchyma Collenchyma Sclerenchyma Definition Simple, living storage tissue. Simple, living, mechanical tissue. Simple, dead mechanical tissue. Shape of the cells Spherical or oval, sometimes rectangular or irregular. Elongated, po..

Machine A can do a work in 6 hours. Machine B and C together can do the same work in 4 hours. If the three machines are being used together, how long will it take to complete the job? => 3 hours or 2 hours or 2 hours 24 minutes or 3 hours 30 minutes..

Look at the incomplete sentences below. Complete each sentence using a suitable tense. 1. In recent years there______ (be) many beauty pageants in Bangalore. 2. In 2000 Lara Dutta _____ (be) Miss universe. 3. Dr. Manmohan Singh _____ (be) the Prime Minister of India in May 2004. 4. Perve..

A machine can make 1,200 rugs in 3 hours. Which graph shows the relationship between the number of rugs produced by the machine and the time taken? => Graph 2 or Graph 3 or Graph 1 or Graph 4..