You are standing some distance away from two speakers that are arranged one in front of the other and in front of you. They emit identical sound waves. As the speaker farther away from you moves 40 cm toward you, the sound you hear changes from maximum loudness (constructive interference) to no sound at all (destructive interference). How much farther towards you will the speaker have to be moved so that you hear maximum loudness once again? Three light bulbs are connected to a 1.5 Volt battery. The resistance of lightbulb A is 3 Ohms. The resistance of lightbulb B and C is 6 Ohms each. What is the total current that is drawn from the battery? A fixed length of string has standing waves. How many wavelengths of the standing wave would fit into the length of string for the fifth mode (n=5)? In a liquid, a current is set up between points A and B. Positive ions are going from A to B moving 6.0 coulombs of positive charge per second and negative charges are moving from B to A moving 4.0 coulombs of negative charge per second. What is the current?