Top answers

When and where should I modulate in a Bach Chorale harmonisation?

A really good way to help yourself with every step of Bach Chorales is to write out a chart of all the notes that the home key, and any keys that you modulate to. This will help make sure you can easily see ...
JW
Answered by Jenny W. • Music tutor
9167 Views

Breifly describe the cohesion-tension theory in plants?

Water evaporates from the cells and leaves the plant once the stomata open, This creates a suction which pulls more water into the leaf As water is cohesive due to hydrogen bonds, when one molecule moves oth...
BQ
Answered by Brendan Q. • Biology tutor
31151 Views

What is meant by the term salt? And how would you confirm if the salt had chloride ions in?

Part 1: "A salt is is when the H + ion in an acid is replaced with a cation (e.g. a metal)" Part 2: You would use the silver nitrate test for halide ions. You add dilute nitric acid (which avoids g...
BQ
Answered by Brendan Q. • Chemistry tutor
3581 Views

Describe how giving a vaccine leads to production of antibodies against a virus

A vaccine is a weakened or dead form of a virus that contains the antigen of that virus. An antigen is a protein on the surface of the virus that allows the body to identify it. Specific T helper cells from ...
OT
Answered by Olivia T. • Biology tutor
8958 Views

Two planes have eqns r.(3i – 4j + 2k) = 5 and r = λ (2i + j + 5k) + μ(i – j – 2k), where λ and μ are scalar parameters. Find the acute angle between the planes, giving your answer to the nearest degree.

Summary of solution: To find the angle between the planes, we must find the normal vector to each plane and then use the scalar product to find the angle between these two normal vectors. Breaking this down ...
DC
8655 Views