A parallel plate capacitor is initially filled with air. A potential difference V0 is produced between the plates and then the power supply is disconnected. After the power supply is disconnected a dielectric of dielectric constant k is inserted between the plates. What is the new voltage Vf between the plates?

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

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

Which are true about beta reactions? there will be more than one answer. a. it has no change b. it doesn't change the mass of the number c. it has a mass of 0.0005 atoms d. it causes transmutation.