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Hi Dom, since you are verifying an existing value (as I understand, you are aiming to confirm through a simulation-based experiment, the value of Wien's displacement constant), you would not formally state a research question (since you already know the value you should get). You can form a hypothesis, stating that based on the existing scientific context, you should get approximately 2.897771955...×10−3 m⋅K for this constant.

Then you can carry out the experiment with the temperature as your independent and the wavelength as your dependent variable.

A thought of caution though: this experiment is one of the examples in the Teacher Support Material provided by the IB. In general, carrying out the exact same work as in the Teacher Support Material examples is not recommended as it puts you in a higher risk of plagiarism and probably lowers your chances of getting a good mark on personal engagement. There are many other constants (see data booklet) that you can verify and that might be more interesting.

Does this help? 

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