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How do I find the area bounded by the curve y=-x^2+4 and the line y=-x+2?

First sketch the line and the curve on the same axes (I would show this using the whiteboard).Then we want to find the points of intersection so set the two equations equal to each other and rearrange to ...

Answered by Sarah H. • Maths tutor

2866 Views

Explain the process of speciation

Geographic isolation occurs so the population is separated and the two groups cannot interbreed. Variation due to mutation arises in the separate populations leading to different alleles becoming dominant...

Answered by Maria W. • Biology tutor

1744 Views

To what extent do socialists have conflicting views over how the economy should operate?

Go through how to structure an exam question like this. The introduction should state what the overarching view of socialism over the economy is and clearly state your opinion whilst recognising the count...

Answered by Bleon S. • Politics tutor

11326 Views

A car driver has to make an emergency stop. The braking distance depends on the speed of the car. For the same braking force, what happens to the braking distance if the speed doubles?

For a situation like this it is best to think of the energy of the car!The car has a kinetic energy = 1/2mv² so if the speed has doubled the new kinetic energy of the car will be 1/2m(2v)^2...

Answered by Alice D. • Physics tutor

4989 Views

A kettle boils 0.6kg of water. After some time the temperature of the water has decreased to 83 degrees. The specific heat capacity of water is 4200J/kg. Calculate the energy transferred to the surroundings.

The variables we are given are mass (m), time (t), temperate CHANGE (delta T) and SHC (c) and we are asked for energy. Think of the equations for energy we know: mgh, 1/2mv², mcdeltaT...the fir...

Answered by Alice D. • Physics tutor

1886 Views