Explain the Hygrometers ?

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Explain the Gravitation and gravity ?

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Explain planck’s hypothesis or what the postulates of planck’s quantum theory? (Or) what are the assumptions of quantum theory of black body radiation? : quantum physics

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What is Shortsightedness or Shortsightedness ?

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the hardest substance available on earth

2 Answers   Orbic,

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how much mercury overflows when a glass vessel filled to the brim with 50 cubic centimeter of mercury 15°C is heated to 75°C of glass?

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In physics WHY WE USE MATHEMATICAL STEPS to describe many theorems

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Tell me what is radium used for?

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Explain the Liquids ?

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Explain the Flying Machines ?

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Which property of the rain coat makes it water proof?

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I want to prepare a frequency generator. the specifications i.e. output requirements are 12V, 1-10A & frequency upto 1K to 5K. Please, inform me with proper circuit dig. & the component values.

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