Help needed ASAP In a lab experiment, a string has a mass per unit length of 0.120 g/m. It is attached to a vibrating device and weight as shown in the figure. The vibrating device oscillates at a constant frequency of 157 Hz.

where P = 157.

What should be the three largest weights in order to produce standing waves in a string of length 42.0 cm?

Answer it orbits high above earth to gain clearer images of light, it magnifies images relative to the human eye, it records most of the universe as it was in the past, not as it is now;

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.

  the answer is don't know.