Compute the electrical conductivity ((ωm)−1 ) of a cylindrical silicon specimen 5.1 mm in diameter and 51 mm in length in which a current of 0.1 a passes in an axial direction. a voltage of 12.5 v is measured across two probes that are separated by 38 mm.

The ability to make things happen is also called a. heat b. force c. matter d. energy

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?