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What is the difference between a vector and a scalar quantity?

A scalar quantity is one that has a magnitude (size) only, and no associated direction in which that size 'points'. A good example of a scalar is temperature, because temperature has a size (for example 20 d...
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Answered by Frazer N. • Physics tutor
6801 Views

Simultaneously solve the equations 3x+2y=36 and 5x+4y=64

The easiest way to solve a simultaneous equation is by the method of substitution. First of all, we take the first equation, and rearrange it so that it is in terms of y. Or, in other words, rearrange it so ...
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Answered by Finlay S. • Maths tutor
12602 Views

What is an infinitive and when is it used?

An infinitive is a verb that has not been changed and is in its original form, eg with an -re, -er or -ir ending , meaning “to …”. An infinitive is commonly found: As a second verb (particuraly after verbs a...
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Answered by Olivia M. • French tutor
2516 Views

What is a ritornello form?

The ritornello form was one of the musical structures developed in the Baroque period. It is characterised by a recurring A section in between new sections of music, and is often described as 'ABACA', where ...
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Answered by Sapphire A. • Music tutor
65118 Views

Expand and simplify the following: 3(z + 6) – 2(4z + 1)

Expand the brackets: (3z + 18) - (8z + 2) Simplify: 16 - 5z
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Answered by Ryan W. • Maths tutor
4324 Views