1.)A 12.0 kg box is being pulled along level ground at constant velocity by a horizontal force of 38.0 N. What is the coefficient of kinetic friction between the box and the floor? Draw a force diagram and then solve. 2.)The horizontal pulling force on the box in the above problem is increased to 55.0 N. What is the box’s acceleration?

Answermake them get very hot and over time wear them out;

Answer choice a test prep

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.