The diagram shows waves of sound travelling through the air. An illustration of a point labeled sound source with concentric circles spreading out from it. Every other circle is 1 more meter away from the source. The sound source is 270 decibels. By which factor is the sound intensity decreased at 3 meters? StartFraction 1 over 9 EndFraction. StartFraction 1 over 3 EndFraction. StartFraction 1 over 2 EndFraction. StartFraction 1 over 4 EndFraction.

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Most of the volume of an atom is occupied by the

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?