Two neutral metal spheres on wood stands are touching. A negatively charged rod is held directly above the top of the left sphere, not quite touching it. While the rod is there, the right sphere is moved so that the spheres no longer touch. Then the rod is withdrawn. Y Part A p/session.masteringphysics.com/myct/itemView?assignment ProblemiD=195605565 Explain what happens with the charges of the spheres during this process. Match the words in the left column to the appropriate blanks in the sentences on the right. Submit blemiD=195605565 Feedback right attracts Coulomb's law repels positively negatively zero left negative charge conservation positive Request Answer While negative rod is near the spheres it sphere. Therefore, the left sphere becomes As the net charge on two spheres is sphere becomes MacBook Air charged. negative charges from the charged. then by Review Reset Help after separation the right Next >

4. The figure below shows three equal positive point charges q located at the corners of a square.a. Is the magnitude of the electrostatic field at point B greater than, less than or equal to the magnitude of the field at point A. Please explain.b. If the length of each side of the square is d, write a symbolic an-alytical expression for |⃗EB| using the dummy variable approach to simplify your life. Evaluate your expression for q = 10 nCoul and d = 10 cm.

MY NOTES ASK YOUR TEACHER A sphere that is positively charged hangs from a string that is attached to a negatively charged plate. The sphere is experiencing a 380 N electrostatic force and a 13 N/C Eid The string's tension is 8 N. Determine the sphere's mass and the sphere's charge (include polarity). Determine the sphere's mass. m= Determine the the sphere's charge (include polarity). q= MY NOTES ASK YOUR TEACHER

Two equally charged, 1.00 g spheres are placed with 4.00 cm between their centers. 2 When released, each begins to accelerate at 225 m/s . As the spheres move, do you expect the force between them to increase, decrease or remain the same? Use an equation to justify your reasoning. Calculate the spacing needed between the spheres that would cut the force between them in half.