Anew airport building is being built 750m from a school. the noise level is 50m from the planes that will land at the airport is 130 db. in open place, such as the fields between the school an the airport, the level descreases by 20 db each time the distance tenfolds. how far away would the school have to move to be tolerable at the school

d) physical means can be used to separate the components of air.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.