How can the Dobbler Effect be used to monitor fetal heartbeats?
Dec 11, 2006 · The Doppler Effect, using ultrasonic waves at a frequency of 2.25 *10^6 Hz, is employed to monitor fetal heartbeats, with a beat frequency of 500 Hz observed. The speed of …
Doppler Effect: Train A and B Whistle Frequency Calculation
May 6, 2018 · The discussion focuses on calculating the beat frequency detected by a listener between two trains with whistles at 392 Hz. Train A is stationary, while Train B moves at 35 …
Understanding the Effects of Doppler Shift on Sound Perception
Jan 22, 2009 · As a train approaches, the Doppler effect causes sound waves to compress, resulting in a higher pitch and increased loudness. When the engineer applies the brakes, the …
Calculating the Frequency of a Car Horn Using the Doppler Effect
Jun 3, 2007 · The discussion centers on using the Doppler effect to calculate the frequency emitted by the horns. The relationship between the beat frequency and the frequency …
Determining Wave Direction using Doppler Effect - Physics Forums
Apr 25, 2003 · To determine the direction of a traveling wave represented by the equation cos (ax±bt), one can utilize the Doppler Effect, which indicates that a lower frequency suggests the …
How Does Doppler Effect Influence Perceived Sound Frequency?
Nov 27, 2005 · The user applies the formula for maximum and minimum frequencies based on the Doppler effect, incorporating the speed of the speaker calculated as 0.707 m/s. The derived …
Blood flow velocity via Doppler effect - Physics Forums
Mar 15, 2019 · A Doppler flow meter measures the speed of red blood cells using a frequency of 12 MHz and detects 1.8 kHz beats from reflected ultrasound. The speed of sound in blood is …
Electromagnetic waves, doppler effect - Physics Forums
Mar 23, 2013 · The discussion revolves around calculating the observed frequency of electromagnetic waves in three scenarios involving relative motion between a source and an …
Calculating Doppler Shift with Ship Sonar and Moving Targets
Apr 20, 2010 · The discussion focuses on calculating the Doppler shift for a ship's sonar system operating at 23.0 kHz with sound traveling in water at 1482 m/s. A whale moving towards the …
What Causes Beat Frequency in Reflected Laser Light? - Physics …
Sep 17, 2009 · The initial frequency of the incident light is given by f_1 = v_0/λ, while the reflected frequency f_2 is affected by the Doppler effect, leading to a modified wavelength. The …