A trumpet player on a moving railroad flatcar moves toward a second trumpet player standing alongside the track while both play a 330 Hz note. The sound waves heard by a stationary observer between the two players have a beat frequency of 5.0 beats/s. What is the flatcar's speed? (The speed of sound in the air is 343 m/s.)

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.

Answerlosing electrons;

The capital letters and lowercase letters smoothly run together without lifting the pen