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Explain how skeletal muscle contraction is stimulated

A nerve impulse travelling down a motor neurone causes the release of acetylcholine from the synpatic knob into the synaptic cleft. This then diffuses across the synaptic cleft down its concentration grad...

MJ
Answered by Michael J. Biology tutor
4001 Views

Which preposition do I use with countries?

The use of prepositions to say you are 'in' a country is actually quite simple in French. Your two options are 'en'  (which is more common) and 'au'.

'Au' is used with masc...

OA
Answered by Owen A. French tutor
4801 Views

Find the solutions to x^3+4x^2+x-5=1

These cubic equations are usually fairly simple once the method is known, firstly make the right hand side (RHS) equal to zero by subtracting 1 from both sides:

x^3+4x^2+x-6=0

...

LH
Answered by Luke H. Maths tutor
4971 Views

How does the formal form "" work in Italian?

To show respect to the person you are referring to, in Italian it is important to use the third singular form "lei" instead of the second singular one "tu";as a consequence, all the ad...

AF
Answered by Angela F. Italian tutor
3158 Views

What is the De Broglie wavelength of an electron given it has a kinetic energy of 1 eV? You are given the mass of an electron is 9.11x10^-31 kg and Planck's constant is 6.63x10^-34

The De Broglie wavelength equation is as follows:

λ=h/p

We know the value of Planck's constant h and so to calculate the wavelength all we need is the momentum, which is equ...

DM
Answered by David M. Physics tutor
97149 Views

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