Search our library of homework questions

Top answers

All subjects

All levels

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

7826 Views

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

4075 Views

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

34073 Views

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

8163 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

4180 Views