Calculate the time period (in seconds) of a sound wave of wavelength 5m travelling with a speed of 500 m/s.
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During the free fall of the object, the decrease in potential energy, at any point in its path, appears as an equal amount of increase in _________________.
An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?
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Which of the following is a land locked country?
The tallest bridge in the world Millau Viaduct has been constructed over the river
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Javier Mascherano of Argentina announced his retirement. He belonged to which sport?