Apiece of cobalt has a mass of 41 g and is initially electrically neutral. it is then charged with q = +0.6 µc.
(a) how many electrons were removed from the piece of cobalt in the charging process (in electron)
(b) what fraction of the total number of electrons in the piece of cobalt does the number in part (a) represent?
(removed electrons/total electrons)

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.

Which lists the organs in the correct order as food passes from the mouth to anus?

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?