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Joseph Conrad's Heart of Darkness and F. Scott Fitzgerald's The Great Gatsby both explore their contemporary contexts. In both, they introduce narrators into an alien context; Conrad exp...

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 unwa...

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 eva...

This is a change in the course of a river usually occuring downstream
It is curvatious in nature and is usually surrounded by a flood plain
The velocity and energy contained by the river is hi...

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...