A sub-woofer is a type of speaker that plays only the very low notes in a song or movie. What types o frequencies would you expect to be able to hear from a sub-woofer?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

Modern weaponry has increased the number of deaths in wars and violent conflicts.

Nitrogen dioxide decomposes according to the reaction 2 no2(g) ⇌ 2 no(g) + o2(g) where kp = 4.48 × 10−13 at a certain temperature. if 0.70 atm of no2 is added to a container and allowed to come to equilibrium, what are the equilibrium partial pressures of no(g) and o2(g)