Explain what is meant by 4th dimension?

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What is a neutron?

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What is the role of transformer in a rectifier?

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What is the life of permanent magnet and what type of magnet is used in speakers?

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a bullet of mass m travelling at velocity v has a kinetic energy of ½mv2 when it strikes a ballistic pendulum of mass 1000 grams. The kinetic energy of the twomasses moving together just after the moment of impact is about a thousand times smaller than ½mv2. What has most of the bullets initial kinetic energy beenconverted to?

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I just want to convert the voltage into current i.e. suppose I have 750V & 1A AC power then I want to convert it into 12V & 62A DC power only difficulty is that I don't want to use the tranceformer. Simply to say, I want to make the step-down without using tranceformer. Please, give me some ideas. And also I want the relation between Magnetic Induction & Weight of the body can be levitated. Or I can say, how much of magnetic induction requires to lift 500gms weight? I am heartily thankful to you.

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Explain how do you separate hydrogen and oxygen gases in industrial electrolysis of water process?

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What is Oxidation ?

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What is a Coal ?

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Swimmers are provided with an inflated rubber jacket . why?

3 Answers   L&T,

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Explain nuclear fusion?

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What is the difference between Centigrade thermometer and a Reaumer thermometer ?

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