Thursday, June 30, 2011

Class Activity 1.4 (e.g. 3) by Ethan & Aaron

(a) Calculate the speed of the wave pulse.
To calculate SPEED of wave pulse = Distance/Time
                                                         = 0.9 / 1.69
                                                         = 0.53 m/s
(b) Is it possible to change the speed of the wave pulse (of the same width)?
These are the following results we obtained.
Pulse WidthTime taken to
travel over 0.9m
501.86s
101.58s
Let us calculate the SPEED
the wave pulse of pulseWidth of 50 = Distance/Time
                                                    = 0.9/1.86
                                                    = 0.48m/s (to 3 s.f)

Let us calculate the SPEED
the wave pulse of pulseWidth of 10 = Distance/Time
                                                    = 0.9/1.58
                                                    = 0.57m/s (to 3 s.f)

Compare;

Pulse Width
Speed (m/s)
30
0.53
50
0.48
10
0.57
Looking at the results, you would realise that;
when I increase the pulse width to 50, it became slower;
when I increase the pulse width to 10, it became faster.

You would discover a relationship between the pulse width and speed of the pulse.
The smaller the pulse width, the faster it goes;
the bigger the pulse width, the slower it goes.

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