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4. Check the Rulers button. You should have the following settings for the wave. Amplitude = 0.75 cm, frequency = 1.5 Hz, Tension-medium. O Fxed End O Loose End C) No End Restart Manual Osolate Pulse 2 4 O Slow Motion Norma Frequency (q)( 0.75 cm ) Damping Tension Rulers Lots Low HighTmr 1.50 Hz Reterence Uinechange the Tension to high.9. The speed of a wave in a string is not affected by frequency or amplitude: it is only affected by the tension in the string A. True B. False 10. Reset All (push the orange round button in the right bottom corner). Select Pulse and Fixed End, and set Dumping to None. Send a pulse through the rope (click the green button) and pay close attention to the pulse that reflects back from the fixed end of the rope. Which statement is correct? A. The reflected pulse is moving in the opposite direction to the incident pulse, has the same amplitude and it is upright. B. The reflected pulse is moving in the opposite direction to the incident pulse, has the same amplitude and it is inverted C. The reflected pulse is moving in the opposite direction to the incident pulse, has a smaller amplitude and it is upright. D. The reflected pulse is moving in the opposite direction to the incident pulse, has a smaller amplitude and it is upright. 11. Click Restart (not Reset) Send one pulse and when the pulse gets close to the fixed end, send a second pulse. Observe what happens in the region where the two pulses overlap. Pause the simulation just before the two pulses overlap and run the simulation step by step to better see what happens. Select the statement that best describes what you observed A. Where the two pulses overlap, the particles in the string move with a higher amplitude than when just one pulse moves through B. Where the two pulses overlap, the particles in the string stop moving and the string becomes flat C. Where the two pulses overlap, the particles in the string move with a smaller amplitude than when just one pulse moves through 12. Click Restart and select Loose End. Send a pulse through the rope. Pay close attention to the pulse that reflects back from the loose end of the rope. Which statement is correct? A. The reflected pulse is moving in the opposite direction to the incident pulse, has the same amplitude and it is upright. B. The reflected pulse is moving in the opposite direction to the incident pulse, has the same amplitude and it is inverted C. The reflected pulse is moving in the opposite direction to the incident pulse, has a smaller amplitude and it is upright. D. The reflected pulse is moving in the opposite direction to the incident pulse, has a smaller amplitude and it is upright.

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