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When do I use the Sine rule?

You use the sine rule (a/sina=b/sinb) when you know 2 angles and one side amd you want to find out what the length of the side opposite one of the angles is.
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Answered by Edward S. • Maths tutor
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Explain why alkenes can have stereoisomers

"Stereo-" refers to 3D space, like with stereo sound involving sound from all directions. The C=C double bond has no free rotation, as this would require breaking the pi bond, which is energeticall...
KB
Answered by Kieran B. • Chemistry tutor
3623 Views

Describe the measures the body takes to achieve homeostasis in response to temperature changes

The body is able to utilise a number of measures in order to maintain an optimum body temperature of around 37 degrees celsius. Firstly, capillaries close to the skin surface are able to vasodilate (expand) ...
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Answered by Adam B. • Biology tutor
3346 Views

Use implicit differentiation to find the derivative of 2yx^2, with respect to x.

To solve this question we use the product rule, where we differentiate one variable whilst keeping the other constant, and vice versa, adding the two results together to get our answer. A helpful formula is ...
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Answered by Daniel W. • Maths tutor
9202 Views

Describe the synaptic transmission of a nerve impulse at the neuromuscular junction

As an action potential arrives at the presynaptic terminal, a depolarisation of the motor neuron membrane occurs which initiates the opening of voltage-gated Ca 2+ ion channels - releasing Ca 2+ into the neu...
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Answered by Adam B. • Biology tutor
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