A 84 kg runner taking part in a 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 31 meters. if he completes the 200m dash in 27.61 s and runs at constant speed throughout the race, what is the magnitude of his centripetal force as he runs the curved portion of the track

No because a circle or pie graph usually shows percentages you'd need a line graph

Ithink it’s 98 because jajajjajansmsmjs

Answer sample (c); // would be best because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the smallest;

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.