About how far apart must you hold your hands for them to be separated by 1.1 nano-light-second (the distance light travels in 1.1 ns)? Assume that the speed of light is 2.998*108 m/s.

How does convection affect our atmosphere? our layers of earth? our oceans?

The midpoints? a, b, and c are marked on the histogram. match them to the indicated scores. which? scores, if? any, would be considered? unusual?

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz