Top answers

What is the cosine rule?

What is it? The cosine rule is a tool to find the size of an angle or the length of a side in a triangle. When to use it? - When we are given 2 sides and an angle- When we are given 3 sides How? For a triang...
NG
Answered by Naomi G. • Maths tutor
5842 Views

What are Oxidation and Reduction?

Oxidation and Reduction forms the basis of Redox reactions - where electrons are exchanged between reactants to form new products. Oxidation is the LOSS of electrons. Eg: Fe 2+ - e - --> Fe 3+ Reduction i...
CL
Answered by Calum L. • Chemistry tutor
6906 Views

Why do energy and biomass decrease at successive stages of the foodchain?

Energy is transferred throughout the food chain as animals at lower trophic levels are consumed by those at higher trophic levels. In every living organism, energy is taken in as food. But when one organism ...
KH
Answered by Katie H. • Biology tutor
60661 Views

How can I figure out the gender of a word in Italian?

The basics Italian is fairly simple when it comes to gender, but there are a few occasions when a new noun can trip you up. Here are some basic rules to keep in mind: 1) Nouns ending in -o (singular) and -i ...
RT
Answered by Raphael T. • Italian tutor
26962 Views

How do we develop immunity?

Immunity is the ability for the body to respond to familiar pathogens so quickly that they are not able to cause a physical disease, meaning we can be infected for a short period of time, and not notice. To ...
CO
Answered by Chidera O. • Biology tutor
7904 Views