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How does an action potential cause contraction in skeletal muscle?

The point at which a motor neurone synapses with a muscle fibre is called the neuromuscular junction. The unmyelinated nerve fibre stops around 30 nanometers before the muscle fibre, leaving a gap cal...

Answered by Orla M. • Biology tutor

11289 Views

how to integrate by parts

If you aren't lucky enough to be told in the question, the first thing we have to do is know when we should you integration by parts.

Answered by Tim M. • Maths tutor

5422 Views

What does the double slit experiment tell us about light?

Imagine an opaque barrier (no light can get through) with two parallel slits in it, onto which we shine a coherent light source (light of only...

Answered by Adam O. • Physics tutor

8732 Views

Show that the orbital period of a satellite is given by T^2=(4pi^2r^3)/(GM) where r is the orbital radius, G is the gravitational constant and M is the mass of the Earth. Then find the orbital radius of a geostationary satellite.

The first part of this question relies on remembering one key principle which is that for a satellite, or any body orbiting in a circle, centripetal force is provided by gravitational force. The rest ...

Answered by Michael H. • Physics tutor

37513 Views

How do I form the negative in French?

To form a negative phrase in French there are always two parts, called particles, which most go around the verb. For example, 'ne...pas': the 'ne' must come before the verb and the 'pas' must come aft...

Answered by Elinor R. • French tutor

4167 Views