3. Match the changes in sound wave properties with their effects on an observer.
__ Rising Pitch
__ Rising Volume
__ Declining Pitch

1. Rising frequency
2. Rising amplitude
3. Longer wavelengths

1. Is rising pitch

2. Is rising amplitude

3.is longer wavelengths

Hope this helps✌️

Explanation:

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

because growing process had stoped after 4-5 year