In music, two notes are said to be an octave apart when one note is exactly twice the frequency of the other. Suppose you have a guitar string playing frequency f0. To increase the frequency by an octave, to 2f0, by what factor would you have to (a) increase the tension or (b) decrease the length?
Name _________________________________ Period _____ Coulomb's Law Practice Problems 1. Suppose that two point charges, each with a charge of +1 Coulomb are separated by a distance of 1 meter. (a) Will they attract or repel _______________(b) Determine the magnitude of the electrical force between them. 9 x 10 N 2. Two balloons are charged with an identical quantity and type of charge: -0.0025 C. They are held apart at a separation distance of 8 m. Determine the magnitude of the electrical force of repulsion between them. 878.9 N 3. Two charged boxes are 4 meters apart