George inserts a long straight wire running from south to north in a circuit. The direction of the conventional current is also from south to north. a. What is the direction of magnetic field of this current-carrying wire? b. What happens to the direction of magnetic field if the direction of flow of the conventional current is reversed? c. Name the rule used in solving parts a and b of this question.

For which pair of objects would adding the same a

One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?

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?