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How do vaccinations help build immunity against diseases?

Inactive forms of the pathogen are injected into the body This stimulates the white blood cells to produce antibodies On reinfection, the antibodies will be produced rapidly and be removed from the body befo...
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Answered by Nimra W. • Biology tutor
2342 Views

Can you explain the difference between distance and displacement

Distance is a scalar which means it only has a length- it is the length of distance travelled along a pathDisplacement is a vector which means it has a direction and a length and is the total change in posit...
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Answered by Emma H. • Physics tutor
3764 Views

How would you simplify this: ((4x+1)/4)+((1-3x)/3)

You must manipulate the fractions so that they both have the same denominator. To do this, multiply the first fraction by 3 and the second by 4 so that they both have the denominator 12. The problem can then...
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Answered by Isobel H. • Maths tutor
3030 Views

How do I approach source explanation questions?

Source analysis is a key skill you will need to get to grips with for your GCSE exams. Before I break down how you should approach your source analysis in a step by step method, I want to emphasise that you ...
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Answered by Hollie S. • History tutor
2700 Views

Imagine a box sliding down a rough slope. What will the free body diagram for the box look like?

In a free body diagram for a box on a rough slope, there will be three arrows. One will point out of the box up the slope (parallel to the slope), one will point directly downwards from the box, and the fina...
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Answered by Eve T. • Physics tutor
5982 Views