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What should I include in a music essay?

A strong A-Level music essay should mainly contain the identification and analysis of some of the key musical features within the given piece, and should also provide some information about the musical perio...
LB
Answered by Lila B. • Music tutor
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What are Acids and Bases?

Acids , by definition, are proton donors, so will donate a H + ion to a base. Examples of acids may be HCl or ethanoic/acetic acid (a.k.a. vinegar). Bases , by contrast, are proton acceptors, so will accept ...
OT
Answered by Omri T. • Chemistry tutor
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Find the all the angles of a triangle with side lengths of 8cm, 11cm and 11cm.

Using the knowledge of a 2 = b 2 + c 2 - 2bcCos(A) Rearrange to aquire Cos(A) = (b 2 + c 2 - a 2 )/2bc Then input the values to obtain the angles of 42, 69, 69.
AJ
Answered by Alexander J. • Maths tutor
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Differentiate with respect to x: 4(x^3) + 2x

d/dx(4x 3 + 2x) = d/dx (4x 3 ) + d/dx(2x) = 4(3x 2 ) + x = 12x 2 + x
AJ
Answered by Alexander J. • Maths tutor
5494 Views

Basic Reactions of Acids.

Any chemical that dissociates to give an H + ion is classified as an acid. There are stong and weak acids but at GCSE you only need to know some key reactions which apply to both weak and strong acids. acid ...
KT
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