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Use the idea of a thermos flask to explain conduction, convection and radiation. Comment also how a thermos flask can reduce heat loss.

Conduction is the transfer of heat caused by the collision of particles inside a substance and between substances. In order to reduce heat loss, some thermos flasks have a vacuum between ...

FR
Answered by Felipe R. Physics tutor
10082 Views

What is representative democracy, and can you give examples of it?

Representative democracy, also referred to as liberal democracy, refers to a democratic system where citizens elect politicians to make decisions for them on their behalf. Representative democracy differs...

JS
Answered by Jack S. Politics tutor
15027 Views

Translate the following question in French : "He went to music class with his friend group."

Il est allé en cours de musique avec son groupe d'amis.

NE
Answered by Naomi E. French tutor
1933 Views

Find the derivative with respect to x, of 5cos(x)+ 4sin(x)

f(x) = 5cos(x) + 4sin(x)to find f,(x) this is just another notation for the derivative.To differentiate trigonometry I always use this one simple trick which I will show on th...

RP
Answered by Ryan P. Maths tutor
4077 Views

How do you approach a primary source analysis?

There are several key things you need to factor into a primary source analysis. These are provenance, purpose and subject knowledge.
Provenance relates primarily to the origins of the source. For exa...

EB
Answered by Eleanor B. History tutor
1970 Views

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