***PLEASE HELP How does the intensity of a sound wave change if the distance from the
source is increased by a factor of 3?
A. The intensity decreases by a factor of 9.
B. The intensity increases by a factor of 9.
C. The intensity decreases by a factor of 3.
D. The intensity increases by a factor of 3.

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.