Task: Question Answering
Input (English): A pipe full of air is closed at one end. A standing wave is produced in the pipe, causing the pipe to sound a note. Which of the following is a correct statement about the wave’s properties at the closed end of the pipe?
(A)The pressure is at a node, but the particle displacement is at an antinode. (B)The pressure is at an antinode, but the particle displacement is at a node. (C)The pressure and the particle displacement are both at nodes. (D)The pressure and the particle displacement are both at antinodes.
Output (English): B