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Speed of train = (Length of train + Length of Platform)/Required time Length of train = 300 m Crossing time of platform = 3 × 60 = 180 sec Length of platform = 300 × 2 = 600 m Let the speed of train be x. Speed of train = (300 + 600)/180 ⇒ x = 5 m/s
Starting from a stationary position, Rahul pedals his bicycle to attain a velocity of 6 ms⁻¹ in 30 s. Then he applies brakes such that the velocity o...
The frequency range of human hearing is approximately:
Which of the following substance produces brisk effervescence when treated with baking-soda solution?
A magnetic force does no work on a moving charged particle because:
The red colour of onion is caused by the presence of which pigment?
Who discovered the neutrons?
Which vitamin is also known as Vitamin-B2?
Which of the following is a compound?
The base of an electric iron is brightly polished mainly -
Humans have _____ lobes in the left lung.