For this activity, you will send wave pulses down a string with different boundary conditions (i.e., fixed-fixed and fixed-loose) and investigate their transit and interference behavior.   Set the wave driver to “Pulse” (upper-left corner), click the Pause Button and then the Restart Button. Then, adjust the simulation's settings as follows: Set the Amplitude to 0.75 cm. Set the Pulse Width to 0.2s Set Damping to None. Set Tension to High.   Using the tools listed in the lower-right corner of the simulation (e.g., rulers, timer, etc.), determine which of the following statements are true. (I recommend using the Slow Motion mode for this activity.) Select all true statements.   Answering this question requires you to time the wave pulses precisely. I recommend using the following procedure to “trigger” the timer to the first pulse--- that is, start the timer from 0:00 seconds when you pulse the generator for the first time. Ensure the simulation is paused. Reset the timer by clicking the Timer Reset Button. Click the Timer Play Button to “arm” the timer. Pulse the generator. The timer should start simultaneously.多项选择题

A pulse takes 2.4 seconds to make a round trip on this string (i.e., to travel from the wave driver, down the string, and back to the wave driver.)

In one round trip on this string, the pulse traverses a distance of 7.6 m.

The wavespeed for the string is about 0.06 m/s.

When a pulse reflects off a fixed end, the pulse inverts.

When a pulse reflects off a loose end, the pulse inverts.

Suppose you pulse the generator one and wait for the pulse to make 1 round trip. At that moment, you pulse the generator a second time. For a fixed-loose string, the pulses constructively interfere completely.

Suppose you pulse the generator one and wait for the pulse to make 2 round trips. At that moment, you pulse the generator a second time. For a fixed-loose string, the pulses constructively interfere completely.

Suppose you pulse the generator one and wait for the pulse to make 3 round trips. At that moment, you pulse the generator a second time. For a fixed-loose string, the pulses constructively interfere completely.

Suppose you pulse the generator one and wait for the pulse to make 4  round trips. At that moment, you pulse the generator a second time. For a fixed-loose string, the pulses constructively interfere completely.

Suppose you pulse the generator one and wait for the pulse to make 1 round trip. At that moment, you pulse the generator a second time. For a fixed-fixed string, the pulses constructively interfere completely.

Suppose you pulse the generator one and wait for the pulse to make 2 round trips. At that moment, you pulse the generator a second time. For a fixed-fixed string, the pulses constructively interfere completely.

Suppose you pulse the generator one and wait for the pulse to make 3 round trips. At that moment, you pulse the generator a second time. For a fixed-fixed string, the pulses constructively interfere completely.

Suppose you pulse the generator one and wait for the pulse to make 4  round trips. At that moment, you pulse the generator a second time. For a fixed-fixed string, the pulses constructively interfere completely.

For a fixed-fixed string, pulsing the generator every 2 𝐿 / 𝑣 seconds (or, equivalently, with a frequency of 𝑣 / 2 𝐿 ) will result in all wave pulses constructively interfering. ( 𝐿 is the length of the string and 𝑣 is the string’s wavespeed.)

For a fixed-fixed string, pulsing the generator every 2 𝐿 / 𝑣 seconds (or, equivalently, with a frequency of 𝑣 / 2 𝐿 ) will result in all wave pulses destructively interfering.

For a fixed-loose string, pulsing the generator every 4 𝐿 / 𝑣 seconds (or, equivalently, with a frequency of 𝑣 / 4 𝐿 ) will result in all wave pulses constructively interfering.

For a fixed-loose string, pulsing the generator every 4 𝐿 / 𝑣 seconds (or, equivalently, with a frequency of 𝑣 / 4 𝐿 ) will result in all wave pulses destructively interfering.