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What are surds and why are they used?

Surds are irrational numbers that can't be represented accurately as a fraction or reccuring decimal, so they are left as a square root. For example: √ 3 . Calculate the square root of 3 using your calculato...
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Answered by Aisling O. • Maths tutor
37722 Views

What is the trend in ionization energy across period 3 in the periodic table?

Ionization energy generally increases across period 3 because the nuclear charge increases but the shielding of the outer electrons remains relatively the same. This means that the electrostatic force of att...
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Answered by Tamara A. • Chemistry tutor
134227 Views

When and how is the imperfect subjunctive used in Spanish?

The imperfect subjunctive is used frequently in Spanish in numerous different occasions such as hypothetical situations or after certain verbs that convey instruction or doubt. The imperfect subjunctive is u...
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Answered by Ben T. • Spanish tutor
2016 Views

How do I lead the interview to where I can show off best what I can do?

Being quizzed in an interview isn't as daunting an idea as it seems, while the interviewers will be keen to evaluate how well you handle new information, they also know that you can talk at length about the ...
TS
1877 Views

What's the difference between the verbs SER and ESTAR in Spanish?

Understanding thhe difference between ser and estar can be tricky as in English we do not make the distinctions between the two types of "to be", however, there are some simple ways to help you rem...
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Answered by Irini K. • Spanish tutor
3316 Views