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Solving simultaneous questions, e.g. 3x + y = 11 and 2x + y = 8

The unknowns in a simultaneous equation need to be solved, which in this case are x and y.The method I will be using is by elimination:First, find which unknown has the same coefficient. In this example this...
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Answered by Simran S. • Maths tutor
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What is the pluperfect tense in German and how do I form it ?

The pluperfect tense describes things or events that had been true or had happened at one point in time before something else happened. The pluperfect tense has two parts to it: it is always formed with the ...
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Answered by Maya S. • German tutor
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Explain the wave - particle duality

If electrons are fired through a thin piece of graphite towards a screen an interference pattern forms.We can explain this by thinking of the electrons as having a wavelength, called the de Broglie wavelengt...
Answered by • Physics tutor
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To what extent can the findings of memory research be used to benefit society?

The findings of memory research can be used to benefit society as they can be applied to education systems. For example the Multi-Store Model can be used to inform teaching strategies. By knowing that one ca...
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Answered by Joanne M. • Psychology tutor
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A particle of mass M is being suspended by two ropes from a horizontal ceiling. Rope A has a tension of 15N at 30 deg and rope B has a tension of xN at 45 deg, find M assuming the particle remains stationary.

This is a classic "picture frame" resolving forces question. By resolving horizontally we can use the "assuming the particle remains stationary" meaning the forces must cancel out, so, xC...
Answered by • Maths tutor
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