Which is an example of a social network? A. a group of parent who post information online about trends in child care
B. a group of coworkers who meet up daily in the cafeteria to learn new skills
C. a group of neighbors who help each other farm a community garden
D. All of the above

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

Explain what happens at the saturation point when adding salt to water at room temperature.

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”