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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
8214 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
23719 Views

Glycogen and amylose are used for energy storage. Glycogen is found in animals. Amylose is found in plants. Describe how the structure of glycogen allows it to perform its function and explain the advantage to animals of using glycogen as an energy

First of all I'd realise that the questions is asking you to make a comparison between glycogen and amylose and their suitability, so would advise the candidate to make two separate bullet point lists for...

LG
Answered by Laura G. Biology tutor
16711 Views

Describe the Benedict's test for reducing sugars and how this can be modified to test for non-reducing sugars

Take 1-2cm3 of the sample in a test tubeAdd a few drops of Benedict's reagent to the test tube Heat the test tube in a water bath Leave for 5 minutes Observe the colour of the precipitate forme...

JP
Answered by Jennifer P. Biology tutor
9218 Views

What are the main causes of globalisation? (8)

Firstly, if a question like this is asked, we want to define the terms in the question. In this case 'Globalisation': which is the process of growing economic integration of the world's economies. When lo...

MC
Answered by Manav C. Economics tutor
3649 Views

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