TIPERS Two pulses travel toward each other along a long stretched spring as show

Question

TIPERS Two pulses travel toward each other along a long stretched spring as shown. Puse A is wider than pulse B, but no as high E1-CT16: WAVE PULSES TRAVELING TOWARD EACH OTHER-SPEED A- Is the speed of pulse A (G) larger than, (i) smaller than, or (ii) equal to the speed of pulse B? If there is not enough information to tell, state that explicitly. Explain your reasoning. E1-WWT17: Two WAVE PULSES INTERACTING-IMPACT A student states: "If hwo wave pulses traveling in opposite directions along the same string meet, they reflect from one another and go back the way they came from. What, if anything, is wrong with this statement? If something is wrong, identify it and explain how to correct it. If this statement is correct, explain why. Copyright 2015 Pearson Education, Inc. 382

Explanation / Answer

a) The speed of pulse A is greater than pulse B because pulse A is wider so has more wavelength .Speed is directly proportional to wavelength so A has more speed.

b) The statement is incorrect as waves do not act like matter .waves do not bounce back or get reflected when they meet.When two waves meet at apoint there is superposition or waves sumup at that point and move to their ususal direction.so correct statement is :If two wave pulses travelling in opposite directions along same string meet, they do not reflect each other and move the way they were moving before just their is superposition of amplitude where they meet.

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