Which statement did Ernest Rutherford make about atoms? A. Atoms are different for different elements.
B. The atom has a small, dense center.
O C. The atom is made up of smaller particles.
D. The energy of an electron depends on its specific orbit.

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.