A Bangladeshi submarine and a submarine of Pakistan move towards from each other during maneuvers in motionless water in the Bay of Bengal. The Bangladeshi sub moves at speed VB=54.00 km/h, and the Pakistan sub at 63.00km/h. The Pakistan sub sends out a sonar signal at 1.250*104 Hz. Sonar waves travel at 6470km/h. (a) What is the signal’s frequency as detected by the Bangladeshi sub? (b) What frequency is detected by the Pakistan sub in the signal reflected back to it by the Bangladeshi sub?

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Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.