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Draw the circuit that could be used to investigate how the current through a filament lamp affects its resistance. How could it be used to investigate this? (6 marks)

*Circuit diagram showing a battery, filament lamp, ammeter and variable resistor connected in series, with a voltmeter connected in parallel with the filament lamp.*The resistance of the variable resistor sh...
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Answered by Oliver B. • Physics tutor
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Draw and label a diagram to show the effects on the equilibrium market position to show the effects of a hot sunny day on the market for ice creams.

Demand Shift to the Right:As we can see on the diagram this increase in demand for ice-cream will cause the demand to make a full shift to the right (reference positions X-Y). This will mean that the equilib...
CF
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Explain the type of bonding in sodium chloride.

The type of bonding in sodium chloride is ionic. This sodium atom loses its outer most electron to complete its outer most shell to form a sodium ion (positive) and donates it to the chlorine atom which acce...
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Answered by Ankit R. • Chemistry tutor
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Given y=2x(x^2-1)^5, show that dy/dx = g(x)(x^2-1)^4 where g(x) is a function to be determined.

y=2x(x 2 -1) 5 --> y=uv, where u=2x; v=(x 2 -1) 5 --> thus product rule required.u'=2v'=10x(x 2 -1) 4 Product rule: dy/dx = uv' + v'uTherefore: dy/dx = 2x(10x(x 2 -1) 4 ) + 2(x 2 -1) 5 g(x) = (22x 2 -2)
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Answered by Sean H. • Maths tutor
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Is the House of Commons more authoritative than the House of Lords?

In short: yes, and no. The issue with this question is that many students will end up thinking that 'authority' is synonymous with 'power', which is not necessarily the case. One must look at the question mo...
CO
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