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A Level

What is meant by a positive feedback loop, and could you give an example?

Feedback loops/systems/cycles can be either positive or negative, and it is important to understand the difference between the two. Crucially, in this case, 'positive' does not refer to something which is...

TH
Answered by Tom H. Geography tutor
6793 Views

Define resolution in regards to images and how it differs from colour depth

Resolution is the number of pixels in a given unit area (dots per inch). A higher resolution increases the quality of an image. Colour depth is the amount of memory stored by each pixel (number of bits pe...

FW
Answered by Freya W. Computing tutor
4785 Views

Translate the following sentence into English: 'the citizens persuaded all the men to listen to the emperor'.

Acceptable answer:cives omnibus hominibus persuaserunt ut principiem audirent.
This is a tricky question because the verb 'persuadeo' is followed by 'ut + ...

DW
Answered by Dominic W. Latin tutor
2229 Views

A ball is released from stationary at a great height. Explain how the forces acting on it change before it hits the ground and how these forces affect the velocity of the ball.

The initial velocity of the ball is 0, and so the only relevant force acting on it is weight pulling it downwards, so, the ball accelerates towards the ground. As the ball falls it hits air particles whic...

EC
Answered by Em C. Physics tutor
8341 Views

How does Keats portray nature in 'Autumn'?

From the title we know that nature is going to play a dominant role in Keats' poem Autumn - not only is it the title but Autumn itself becomes a female character when Keats' personifies and apost...

ZL
23857 Views

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