b) Three charges are arranged as shown in Figure. Find the magnitude and direction of the electrostatic force on the charge at the origin. [ Given Data Coulomb's constant, k = 8.99X10° Nm2/c2] y q1 = 5 µC q2 = 2µC 0.500m 0.300m q3 =- 4 µC i). The electrostatic force F12 (between q2 and q1) is = ii). The electrostatic force F23 (between q2 and q3) is = iii). The Magnitude of the resultant force on q2 is = N iv). The direction O of the resultant force measured clockwise from the +x axis is = degrees

P Question 44

Question 36

just option C

N P. W

Question 12

Question 9

Not sure why the answer is C

Problem 4: Speed deamplifier. In the figure above on the right, block 1 of mass m1 slides along an x-axis on a frictionless floor at speed 4 m/sec.Then it undergoes a one-dimensional elastic collision with stationary block 2 of mass m2 = 2m1. Next, block 2 undergoes a one-dimensional elastic collision with stationary block 3 of mass mz = 4m1. What then is the speed of block 3? Answer: 16 m/sec or 1.78 m/sec.