What role does a resistor play in an electrical circuit? A. it removes excess electrons from the outer surface of a conducting wire. B. it transforms light energy and thermal energy into electrical energy. C. it transforms the electrical energy of the electrons into other forms of energy. D. it stores electrical energy until it can be released by closing a switch

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.