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What is diffusion and why is it important in both animals and plants?

Diffusion is a passive process involving the movement of molecules from a region of a higher concentration to one of a lower concentration (the term passive means that the process does...

MC
Answered by Mathew C. Biology tutor
185326 Views

What is an (electrostatically) induced charge?

When an electrically charged object (e.g rod) charges an uncharged object (e.g. metal sphere) that is nearby with the opposite charge. 

How does this happen?

HT
Answered by Herminia T. Physics tutor
22827 Views

How to analyse a source?

Analysing a source at first often feels like a daunting task, especially because it is unseen material, but it needn’t be! If you simply focus on what the question if asking you to do and structure it ...

ML
Answered by Matthew L. History tutor
18834 Views

A rollercoaster carriage of mass 100kg has 45kJ of Kinetic Energy at the lowest point of its ride. Ignoring air resistance and friction between the wheels and the tracks, what is the maximum height above this point it could reach? [Take g as 10m/s/s)

[A useful tip: always start by drawing a diagram!!]This question is asking you to apply conservation of energy, i.e. at the highest point it can reach above the lowest point, all of this Kinetic Energy wi...

RW
Answered by Ross W. Physics tutor
4319 Views

How do I differentiate between masculine and female nouns?

It is often difficult to tell if a French noun is feminine or masculine. There are some tricks to knowing the difference though. Feminine nouns usually end in 'e' or 'ion' whereas for masculine nouns i...

IS
Answered by India S. French tutor
4542 Views

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