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What is the process of freeze-thaw weathering?

This is where water enters the cracks on rocks and then during time of decreased temperatures the water freezes. As it freezes, the water expands which places a lot of pressure on the rocks around it. This p...
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Answered by Annabel R. • Geography tutor
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White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2 Work out the cost of 18 litres of the mixture.

Amount of paint needed: White paint = (18 ÷ 5) × 3 = 10.8 litres Blue paint = (18 ÷ 5) × 2 = 7.2 litres Cost of white paint = 10.8 x £2.80 = £30.24 Cost of blue paint = 7.2 x £3.50 = £25.20 Total cost = £30....
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Answered by Jared M. • Maths tutor
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Why did Henry VIII break from the Roman Catholic Church?

First of all Henry VIII wanted a son to continue his line and create a dynasty. He previously had only had one daughter (Princess Mary) to his now old wife Catherine of Aragon. As she was past child bearing ...
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Answered by Annabel R. • History tutor
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differentiate y=(5x-2)^5

25(5x-2)^4
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Answered by Miss K. • Maths tutor
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How is the lung adapted for gas exchange?

Large surface area: Branches off, starting with bronchioles until microscopic in size with air filled sacs called alveoli. The alveoli also have massive capiliary networks surrounding them so there is a big ...
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Answered by Miss K. • Biology tutor
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