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Explain the process of nuclear fusion in the Sun.

In the Sun the main fusion process is the fusion of hydrogen nuclei to form helium nuclei. Any two hydrogen nuclei repel each other as they are both positively charged, for the fusion to occur the two nuclei...
JA
Answered by Jake A. • Physics tutor
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How do I do simultaneous equations?

example: solve the simultaneous equations 3x+2y=4 and 2x+y=3 1: 3x+2y=4 2: 2x+y=3 want to either get same number of x's or same number of y's in equation 1 and equation 2 easiest way to do this is by making ...
CS
Answered by Cerys S. • Maths tutor
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A school has a number of students. One is chosen at random; the probability that the student is female is 2/5. Knowing that there are 174 male students, work out the total number of students in the school.

This is a simple yet standard GCSE question, especially in non-calculator papers. The solution is simple: if the student is picked at random, then the probability 2/5 must represent a ratio where the other s...
AM
Answered by Adam M. • Maths tutor
4998 Views

Explain processes of erosion that occur in a river

The first erosional process that occurs in a river is hydralic action, which is where water is forced into cracks in the river bed and channel which compresses trapped air, making the cracks larger which can...
OS
Answered by Olivia S. • Geography tutor
4772 Views

Outline two ways in which belief in a just God has an impact on Christians today. (4 marks)

Belief in a just God encourages Christians to act more fairly towards others. This is because they believe they have experienced God's justice and they want others to experience it as well. Christians believ...
RK
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