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Let the speed of the train be x m/s, and the length of the train be y m. When it crosses a man Distance = speed × time taken Y = 12x Now when it crosses the platform (y+480) = 36x From these two equations Y = 240 m, and x = 20m/s Now when it crosses the bike Speed of bike = 27×5/18 = 15/2 m/s Now 240 = (20-15/2) × time Time = 240×2/25 Time = 19.2 s
Which of the following is an example of mutualism?
With increase in impurities, the boiling point of water _________?
Which of the following is the correct set-up for electrolytic refining of silver?
When diamond is heated at more than 1500 Degree Celsius in the absence of air, then it turns to………….?
The modern system of classification of living beings is based on the principles of
Which of the following is the correct sequence in terms of increasing mass?
In blood, platelets are required for
Minamata disease, a neurological disorder, is caused by eating fish contaminated with which element?
The most of the mass of an atom can be found in
Eclipses occur due to which optical phenomena?
