2. Liza uses a spiral spring to generate a transverse pulse.
2.1 How must Liza move her hand to generate a transverse pulse?
2.2 how do the coils compare to the directions that the pulse moves in?
2.3 explain how the motion of the coils allows the pulse to propagate.
2.4 draw a sketch to the transverse pulse and show the pulse length, amplitude and rest position.
2.1 To generate a transverse pulse using a spiral spring, Liza must move her hand perpendicular to the length of the spring. This means she should move her hand side to side or up and down, rather than along the length of the spring.
2.2 The coils of the spiral spring are oriented parallel to the length of the spring. In other words, the coils are aligned in the same direction that the spring extends or contracts.
2.3 The motion of the coils allows the pulse to propagate because when Liza moves her hand, it causes a disturbance in the coils of the spring. This disturbance sets off a chain reaction along the length of the spring where adjacent coils push and pull on each other, transferring the energy of the disturbance from one coil to the next. This transfer of energy allows the pulse to travel along the spring.
2.4 Sketch:
```
___________________________________________________
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---------------Pulse--------------------------------
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^ Amplitude
|
Rest
Position
```
The sketch shows a section of the spiral spring with the pulse represented by a thicker line. The length of the pulse is indicated by the horizontal width of the thicker line. The amplitude is the maximum displacement of the pulse from the rest position, indicated by the vertical height of the thicker line. The rest position is indicated by the thinner lines above and below the pulse.
Sure, I can help you with your questions.
3.1 To calculate the speed of the pulse, you can use the formula:
Speed = Distance / Time
In this case, the distance the pulse moves is 5 meters and the time it takes is 12 seconds. Plugging these values into the formula, we have:
Speed = 5 m / 12 s = 0.4167 m/s
So, the speed of the pulse is approximately 0.4167 m/s.
3.2 To calculate how far the pulse moves in 2.5 seconds with a speed of 5 cm/s, you can use the same formula:
Distance = Speed * Time
In this case, the speed is 5 cm/s and the time is 2.5 seconds. However, we need to convert the speed from centimeters per second to meters per second to have consistent units. There are 100 centimeters in 1 meter, so 5 cm/s is equal to 0.05 m/s. Plugging these values into the formula, we have:
Distance = 0.05 m/s * 2.5 s = 0.125 meters
So, the pulse will move a distance of 0.125 meters in 2.5 seconds.
thanks i was having a hard time trying to understand it
You're welcome! I'm glad I could help clarify it for you. If you have any more questions, feel free to ask!
hi i have another question.
3.1 a pulse moves 5 m in 12 s. calculate the speed of the pulse.
3.2 a pulse has a speed of 5 cm s^-1. how far does it move in 2,5 s?