Ineed this answered quickly. is the branch of science for naming and classifying organisms based on their natural relationships? a-physics b-taxonomy c-genetics d-biology

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

What is the momentum of a 2 kg object moving at 15 meters per second