Two trains one moving at a speed of 30 mile/h and iother at 60 mile/h, approaching each other. When a faster train blows a whistle, the apparent friequency of the note head by an observer at rest behind the faster train is 1852 Hz. Calculate the frequency of note produced by faster train (Assume speed of sound to be 1100 ft/s)
Two trains, each having a speed of 30 km//h , are headed towards each other
Two trains are moving towards each other at speeds of 20 m/s and 15 m/s relative to the ground. The first train sounds a whistle of frequency 600 Hz . the frequency of the whistle heard by a passenger in the second train before the train meets is (the speed of sound in air is 340 m/s )
Two trains are moving towards each other on parallel tracks at speeds of 144kmph and 54kmph . The first train sounds a whistle of frequency 600Hz . Frequency of the whistle as heard by a passenger in the second train is ( V=340m//s )
Two trains are moving towards each other at speeds of 72kmh^-1 and 54 kmh^-1 relative to the ground. The first train sounds a whistle of frequency 600 Hz. Find the frequency of the whistle as heard by a passenger in the second train a. before the trains meet and b. after teh trains have crossed each other. The speed of sound in air is 340 ms^-1
Two trains "(A&B)" are moving toward each other on two parallel tracks at the same speed u with respect to the ground. The whistle of train A blows. In which of the following cases, the frequency of the sound heard by a passenger on the other train B will be greatest?
Two passenger trains moving with a speed of 108km//hour cross each other. One of them blows a whistle whose frequency is 750Hz . If sound speed is 330m//s , then passengers sitting in the other train, after trains cross each other will hear sound whose frequency will be
