You need to insert a metal slab between two plates of a parallel-plate capacitor. The plates are a distance d apart, and a battery maintains a constant potential difference Vbatt between them. In order to avoid dielectric breakdown, the electric field in any region cannot exceed 4Vbatt/d. (a) What is the maximum thickness of the metal slab that can be used without causing dielectric breakdown?(b) If this maximum thickness is used, does the insertion of the metal slab affect the amount of charge stored in the capacitor?

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you