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Describe one research study which has investigated schema theory.

In this 22 mark question you first want to specify the parameters of the essay - define and explain schema theory as a concept (Schemas are cognitive structures that are derived from prior experience and ...

Answered by Tutor52884 D. • Psychology tutor

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How do you complete the square to answer quadratic equations?

x²+6x-2 = 0

We use completing the square when the equation cannot be factorised. Begin by placing x²in the brackets and halving the number in front of the x...

Answered by Mikhailia M. • Maths tutor

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y is inversely proportion to the square of x. y=10 when x=5. Express y in terms of x.

y is proportion to 1/x². This can be written as y=k/x² where k is a constant of proportionality. Given that y=10 when x=5, k can...

Answered by Evan H. • Maths tutor

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The curve y = 2x^3 - ax^2 + 8x + 2 passes through the point B where x=4. Given that B is a stationary point of the curve, find the value of the constant a.

As B is a stationary point, the value of dy/dx at this point must be equal to 0. Differentiating y gives this to be dy/dx = 6x²-2ax+8. At point B, <...

Answered by Evan H. • Maths tutor

8988 Views

A heater uses energy from a laptop computer to keep a mug of coffee hot. Energy is transferred to the coffee at the bottom of the mug. Explain how a convection current is set up in the coffee.

The molecules at the bottom of the mug gain energy and spread out as a result. This means that these molecules are less dense than the ones above them so they rise upwards. As they do so, they lose energy...

Answered by Evan H. • Physics tutor

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