A point particle of charge q1=4.5*10^-6 is placed on the x-axis at x=-10 cm. A second particle of charge q2 is placed on the x-axis at x=+25 cm. The electric field at the origin is zero. Determine the charge q2

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

What is the difference between mass density and weight density?

Suppose two stars are located in region a of the h-r diagram shown in the figure below. star c appears much dimmer than star y as seen from earth. which star can be inferred to be nearer to earth and how do you know?