To practice problem-solving strategy 16.2 doppler effect. the sound source of a ship’s sonar system operates at a frequency of 22.0 khz . the speed of sound in water (assumed to be at a uniform 20∘c) is 1482 m/s . what is the difference in frequency between the directly radiated waves and the waves reflected from a whale traveling straight toward the ship at 4.95 m/s ? assume that the ship is at rest in the water. mastering physics g

147 Hz

Explanation:

First we need to know what frequency will the waves hitting the whale have respect of it.

The change in frequency is calculated with this equation:

However in this case, the wave is bouncing on the whale and coming back, so there is a double frequency shift (the difference is the same both times because the relative speeds between the two objects is the same both times)

Then:

The frequency shift is positive, it will have increased frequency.

electrical to thermal

heat the gas and measure the pressure