Question
Two trains of same length are running in parallel tracks
in the same direction with speed 55 km/hr and 115 km/hr respectively. The latter completely crosses the former in 30 seconds. Find the length of each train (in m).Solution
When two trains cross each other, they cover distance equal to the sum of their lengths with relative speed.  Let's take length of each train = x So, total length of both trains = 2x Relative speed = (115 – 55) × (5/18) = 50/3 m/sec. ∴ Total length = Time × Relative speed ⇒  2x = (30 × 50)/3 ⇒  x = 250 m
Golden flake is a disorder of
Protection of the wildlife habitat can be done through in-situ and ex-situ conservation methods. Which one of the following is not a site for in-situ me...
Land equivalent ration (LER) is used to evaluate which of the following option?
Which of the following is not true about DNA?
Lycopene developed in quantity in tomato at what temperature:
Protection of the wildlife habitat can be done through in-situ and ex-situ conservation methods. Which one of the following is not a site for in-situ me...
Acetic acid and lactic acid are used for __________________
What is the power extracted by PTO?
A farmer, who has land holding between 1 to 2 hectares, is known as:
Fruit for making jelly should be rich in
