1. [1pt] Consider a harmonic wave that moves a particle on a string in the trans

Question

1. [1pt]
Consider a harmonic wave that moves a particle on a string in the transverse direction.
Enter true (T) or false (F) for the following statements. For example, if the first statement is true and the rest false, enter TFF. You have 4 tries. Don't guess! On an exam you might be asked to explain your reasoning.

i) The particle speed varies with time as the wave passes through it.

ii) Increasing the tension in the string increases the maximum particle speed.

iii) When the amplitude of the wave is increased, the maximum particle speed increases.

i) In what direction is a particle at point 3 moving if the wave is travelling to the right?

ii) In what direction is a particle at point 4 moving if the wave is travelling to the left?

iii) In what direction is the wave travelling if a particle at point 4 is moving upward?

iv) In what direction is the wave travelling if a particle at point 5 is moving downward?

v) In what direction is a particle at point 8 moving if the wave is travelling to the right?

3. [1pt]
Six snapshot graphs of travelling harmonic waves are shown. They all have the same frequency but various amplitudes and wavelengths. Rank the waves by phase speed from slowest to fastest. E.g., if the slowest wave is B, the next faster one A, then C, and so on, enter BACDEF.

Explanation / Answer

1) TFT

IF X=ASinwt then v=AwCoswt

2) BBACA

In the transverse wave, oscillation of an atom is normal to the diection of the wave hence direction can be easily understood

3) BCEFDA

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