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What is the subjunctive?

The subjunctive is a mood used in French to express emotions or ideas which are uncertain or subjective. Examples include to express doubt, emotions or will/ wanting.There isn't really an English equivalent ...
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Answered by Madeleine S. • French tutor
3456 Views

How do you use the subjunctive mood?

The subjunctive tense in Spanish can't be thought of like the other tenses (present continuous, perfect etc). It is used to reflect the mood of the speaker. In English, the subjunctive is not that common eg....
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Answered by Vance L. • Spanish tutor
3776 Views

What is the 'centre of gravity' of an object and how do I calculate it?

The centre of gravity (or centre of mass) of an object is the point through which an object's weight will act through. In other words, the object will always balance around this point. Imagine a square book;...
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Answered by Matthew B. • Physics tutor
25085 Views

What is Olbers' Paradox?

Olbers' Paradox is a famous problem which baffled many scientists in the early 19th century. The German astronomer Olbers (and many of his colleagues) made assumptions that the universe was static, of infini...
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Answered by Matthew B. • Physics tutor
13019 Views

How do capacitors work and what are its units?

Capacitors are an electrical component made up of two plates with an insulator between them. Electrons flow onto one of these plates as current flows around the circuit. This gives one of the plates a negati...
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Answered by Matthew B. • Physics tutor
4206 Views