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Theory of Plate Tectonics

The continents of Africa and South America used to "fit together” like puzzle pieces. About how far back in time would you have to go to find the formation of the Atlantic ocean?

600 million years
430 million years
200 million years
90 million years

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates