Chemistry

Doppler effect, Mach cone and supersonic


Multiple choice questions on the Doppler effect and the Mach cone

task

The transmitter and receiver move in the same direction at the same speed. How does the emitted wavelength change when it arrives at the receiver?

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task

Two planes fly towards and past each other at supersonic speed. When do you hear each other?

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task

You are driving past a siren in a car. How does the Tonhöheim pass by?

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task

You are driving past a siren in a car. How does the frequency change?

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task

You are standing in front of the fire station. A car drives off with the siren switched on and accelerates. How does the pitch change?

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task

A police patrol with a siren overtakes you. How does the pitch change that you perceive?

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task

An ambulance with the Martinshorn switched on is coming towards you in the opposite lane. How does the frequency of the sound that you hear as you drive past change?

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task

How large is the opening angle of the Mach cone at the speed of sound?

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Video: Doppler effect - Supersonic source (January 2022).