4. A source of sound frequency 600Hz is placed inside water. The speed of sound in water is 1500 ms and in air is 300 ms. The frequency of sound recorded by an observer, who is
standing in air, is

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

don't remove my answer im trying my best to answer them

explanation:

i'm on my way to history not a mistory.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular