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Practice question - How significant were the differences between the Northern and Southern states c1845? [25 marks]

Think about how to approach the question and from there think about how to structure it. Split points into differences which were significant and those that were not along with any similarities. Try to gr...

Answered by Ben C. • History tutor

3692 Views

What does the strength of lattice enthalpy of formation depend on?

So, lattice enthalpy of formation is defined as the 'standard enthalpy change when one mole of an ionic crystal lattice is formed from its constituent ions in gase...

Answered by Zaynab A. • Chemistry tutor

3021 Views

A curve has equation y = 20x −x^2 −2x^3 . The curve has a stationary point at the point M where x = −2. Find the x-coordinate of the other stationary point of the curve.

dy/dx = 20 - 2x - 6x² = -6x² - 2x + 20 which factorises to dy/dx = (10 - 6x)(2 + x). This shows that x=-2 and x=10/6=5/3 are stationary points of y = 20x −x² −2x³

Answered by Xixi Y. • Maths tutor

5972 Views

How does an increase in interest rates affect real GDP?

An increase in interest rates increases the incentive to save, as the reward for saving is now higher. So, saving in the economy is likely to increase, which will decrease consumption (assuming that peopl...

Answered by Laura N. • Economics tutor

48137 Views

Explain Aristotle's Four Causes

In discussing the body and soul, many deem Aristotle to be a materialist, as he doesn't believe in the distinction between the body and soul like other philosophers such as Plato. Aristotle is often calle...

Answered by Caitlin K. • Philosophy and Ethics tutor

8095 Views