Recent content by elee123

thanks. I tried that. but after putting the forces in, I dunt know where to go from there.

1.A small 3.94 g plastic ball is suspended by a 27.9 cm long string in a uniform electric field of 3400 N/C. The acceleration of gravity is 9.8 m/s2 , and the Coulomb constant is 8.99×109 N · m2/C2. If the ball is in equilibrium when the string makes a 43.2◦ angle with the vertical as in-...