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What are the main data structures that I can use in Python

The main data structures in Python are tuples, lists, and dictionaries. The main difference between them is that in tuples and lists the element order matters, while in dictionaries elements are associated t...
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Answered by Luca R. • Python tutor
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How can I apply the chain rule for differentiation?

The chain rule needs to be applied when you are differentiating a function f of x with respect to a variable t, x is a function of (i.e. given f(x) and x(t), you want to calculate df/dt. To do so you will ha...
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Answered by Luca R. • Maths tutor
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Could you please explain how does a general pulley system work and how I can solve problems associated with those?

Pulley systems allow for force transmission from one body to another or more. Intelligent pulley systems can be used to apply more force to a body of interest than that generated (by any power system or othe...
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Answered by Luca R. • Physics tutor
2194 Views

How do I answer a source analysis question? An explanation of what makes a good answer with an example on the Early Cold War.

Source B also provides evidence which suggests Stalin’s desire to expand Soviet influence led to the breakdown of the Grand Alliance. The source states the ‘USSR had special interests in Poland’ from which i...
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Answered by Emily H. • History tutor
9501 Views

Suggest three reasons why some rainstorms in hot, arid environments result in flash floods.

Flash floods in hot and arid environments pose more of a threat in terms of consequences than in other environments. Firstly, an arid environment is an area that receives less than 250mm of rainfall per annu...
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Answered by Jamie A. • Geography tutor
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