Honda Civic Si. The Honda Civic Si is a sport compact trim of Civic by Honda. The Si (Sport Injected) trim was introduced for the third generation of Honda Civics in both Japan and North America. In Canada and elsewhere the trim became known as the SiR for the sixth and seventh generations, and the Si trim was equivalent to the USDM EX model.
The fetal heart begins to beat at approximately the same rate as the mother's, which is typically 80 to 85 bpm. 1  The approximate fetal heart rate for weeks 5 to 9 (assuming a starting rate of 80): 2  Week 5 starts at 80 and ends at 103 bpm. 3  Week 6 starts at 103 and ends at 126 bpm. 4  Week 7 starts at 126 and ends at 149 bpm.
Hertz is used commonly used to measure wave frequencies, such as sound waves, light waves, and radio waves. For example, the average human ear can detect sound waves between 20 and 20,000 Hz. Sound waves close to 20 Hz have a low pitch and are called bass frequencies.