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Frequency is the number of occurrences of a repeating event per unit of time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. Frequency is measured in units of hertz which is equal to one occurrence of a repeating event per second. Formula of Frequency is f = 1/T (f=frequency and T = period).
Train A leaves a station at a certain time and at a fixed speed. After 4 hours, Train B leaves the same station and moves in the same direction at a uni...
Train A running at speed of 90 km/hr crosses a platform having twice the length of train in 12 sec. Train B whose length is 340m crosses same platform i...
720 metres long train crosses a man who is moving in the same direction with a certain speed, in 30 seconds. If the same train can cross a tree in 20 se...
1800 metres long train crosses a man who is moving in the same direction with a certain speed, in 18 seconds. If the same train can cross a tree in 9 se...
Without stopping the speed of the train is 135 kmph, with stopping the speed of the train is 90 kmph.Find the stop time of the train?
Two trains of same length are running in parallel tracks in the same direction with speed 45 km/hr and 105 km/hr respectively. The latter completely cro...
Two cars start from a place with a speed of 50 km/hr at an interval of 12 minutes. What is the speed of a man coming from the opposite direction towards...
A 180-metre train takes 9 seconds to cross a pole. If the same train takes 18 seconds to cross train 'D' that is travelling in opposite direction at 14 ...
Train A running at speed of 162 km/hr crosses a platform having twice the length of train in 22 sec. Train B whose length is 760m crosses same platform ...
Train 'A' crosses a pole in 35 seconds and takes 40 seconds to cross a platform that is 120 meters long. Train 'B' is half the length of Train 'A' and t...
