A long spring is attached to a wall at one end. A pulse is sent down the spring. When the pulse reaches the wall it bounces back upside down. At the moment it reaches the wall, a second pulse is sent down the spring.
What happens when the two pulse meet?

Explanation: When two or more waves meet, they interact with each other. The interaction of waves with other waves is called wave interference. Wave interference may occur when two waves that are traveling in opposite directions meet. The two waves pass through each other, and this affects their amplitude.

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A long spring is attached to a wall at one end. A pulse is sent down the spring. When the pulse reaches the wall it bounces back upside down. At the moment it reaches the wall, a second pulse is sent down the spring. What happens when the two pulse meet?

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A long spring is attached to a wall at one end. A pulse is sent down the spring. When the pulse reaches the wall it bounces back upside down. At the moment it reaches the wall, a second pulse is sent down the spring.
What happens when the two pulse meet?