Which is heavier the land mass or the sea?
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Why dies a piece of iron sink in water, while a ship remains floating ?
Is it possible to convert a heat energy into magnetic energy?
which of the following would be the most suitable for making an electromagnet
Explain the name for the physical constant with a value of 6.62 x 10-27 erg seconds?
Explain how many more times louder is 70 decibels than 10 decibels?
When thomas edison was promoting the wide use of direct current, this personal enemy of edisons was the chief proponent and expert in alternating current?
when does one exert greater pressure on ground during walking or standing? why ? what happends to the period of a simple pendulum taken into a deep mine
why are metals able to conduct current so well?
Examine the working of the Refrigerator?
What is Colours of bodies ?
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?
What is the principle of superposition?