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A person touches a hot pan by accident and their hand automatically moves away. What type of response is this? Describe how the structures involved cause the response. (5 marks)

Reflex action/reflex arc/reflex (allow "involuntary") The stimulus (heat) is detected by temperature receptors in the skin. This causes impulses to travel along a sensory neurone to the spinal cord...
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Answered by Ariel R. • Science tutor
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Who are the Olympic gods?

There are 12 Olympic gods, each with their own personality and characteristics. They were worshipped in accordance with these personality traits and often displayed very human characteristics. Zeus - ruler o...
HS
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How to find the derivative of arctan(x)

Let y = arctan(x). Then x = tan(y). Differentiate using the chain rule and rearrange: d(x)/dx = d(tany)/dx So 1 = sec^2(y) * dy/dx dy/dx = 1/sec^2(y) But from identity sin^2(y) + cos^2(y) = 1 We can derive, ...
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Answered by Matthew R. • Maths tutor
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What are some ways to learn noun genders in Spanish?

As all Spanish nouns are classified as either masculine and feminine, I have found several ways of learning how to easily remember and be able to recognise the gender of a noun when I see it written down or ...
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Answered by Henry T. • Spanish tutor
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How do I do this question: A small stone is projected vertically upwards from the point A with speed 11.2 m/s. Find the maximum height above A reached by the stone.

[Draw Diagram] We are given the inital velocity u=11.2m/s and we know the acceleration due to gravity is 9.8m/s^2. We need to find the distance 's'. When the stone is at its highest point the velocity will b...
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Answered by Luke W. • Maths tutor
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