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name the 4 processes of erosion

Abrasion, attrition, hydraulic action and solution

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What caused the First World War to break out in 1914?

The First World War broke out as a result of several long term causes and one short term trigger. It is impossible to explain the war with just one cause, because it was caused by a variety of interlinkin...

Answered by Anna S. • History tutor

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Steve wants to put a hedge along one side of his garden. He needs to buy 27 plants for the hedge. Each plant costs £5.54 Steve has £150 to spend on plants for the hedge. Does Steve have enough money to buy all the plants he needs?

5.54 x100 = 554 554 x 27 = 3878 + 11080 = 1495814958 / 100 = 149.58 149.58 < 150 Therefore Steve does have the money to buy all 27 plants.

Answered by Vrinda N. • Maths tutor

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State the element in period 3 that has the highest melting point and explain your answer.

Silicon has a Chrystal structure with many covalent bonds between atoms. Covalent bonds are strong and need a large amount of energy to be broken in order to melt Silicon.

Answered by Lily B. • Chemistry tutor

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A tractor pulls a plough 2km across a field using a constant force of 8N, what is the work done by the tractor?

Work done= F x d; where d= distance object has been moved through in same direction of force and F= resultant force. F=8 N.d=2 x 1000 m.WD = 2000 x 8 = 16000 J

Answered by Lily B. • Physics tutor

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