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How can I make better use of quotations in my essay?

At A-Level, examiners want you to be able to use your quotation as a springboard for critical and contextual discussion. For this reason, an effective strategy when memorising quotations is to pair each one ...
EW
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How does electrophilic aromatic substitution occur?

The delocalised ring in aromatic compounds (such as benzene) is very stable and therefore requires a very strong electrophile to be created before it will react. An example of this would be the formation of ...
MP
Answered by Miles P. • Chemistry tutor
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Outline one or more ways in which behaviourists treat phobias.

One of the ways in which behaviourists treat phobias is by using systematic desensitisation. This process is based on classical conditioning (counterconditioning). The treatment involves replacing an unwante...
AA
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Explain the purpouse of reflux in the oxidation of ethanol to ethanoic acid

Reflux apparatus is when a distillation tube is surrounded by an apparatus that pumps cold water around it in order to condense its compounds in the mixture As ethanol has a low boiling point, it evaporates ...
MA
Answered by Monisah A. • Chemistry tutor
23974 Views

two balls of similar size masses m and 2m are moving at speeds u and 2u along a frictionless plane, they collide head on and are reflected, assuming that the coefficient of restitution of this collision is 1, what the speeds are afterwards in u

ball A has mass m and velocity u. ball B has mass 2 m and velocity 2uby conservation of momentum:mu - 4mu = mv + 2mx (1)where v is the velocity of ball A and x is the velocity of ball B after collision.by co...
WA
Answered by William A. • Maths tutor
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