Three charged marbles, labeled q1, q2, and q3, are oriented such that q2 is between q1 and q3. The charge on q2 is −12.5 µC. What is the sign of q1 and q3 charge?

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point