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Facebook est une perte de temps, êtes-vous d'accord?

Facebook est le réseau social actuellement le plus utilisé au monde avec plus d'un milliard d'utilisateurs dans le monde et 25 millions en France. Il peut être juste de penser qu'il représente une perte d...

SR
Answered by Sigrid R. French tutor
6407 Views

Describe how an antibody works?

Binding sites on the antibody are complementary to specific binding sites on antigen.  Antibodies group together/in groups of 5 (pentamers) and attach to antigen presenting pathogens, forming antigen-anti...

AP
Answered by Adam P. Biology tutor
2852 Views

How should I approach a long piece of writing to be able to answer questions about it?

The best way to approach this is to skim-read the piece first, highlighting/making a note of what you think are the most important concepts or issues raised. Don't stress if you don't understand some of t...

AC
Answered by Andrea C. Italian tutor
1978 Views

A ball is launched upwards at 30 degrees to horizontal with a velocity of 20 metres per second, how far does it travel before landing? (no air resistance)

Vertcal component of velocity: 20Sin(30)

Rearrange suvat equation for t in terms of u, a, s

t is the time in the air and is what we want, u is 20sin(30), a is -9.81 (negative since gravity p...

JF
Answered by Joseph F. Physics tutor
1896 Views

What are the 5 conditions for the Hardy Weinburg equiliberium? And if all of these conditions are met what does the equiliberium state?

The 5 conditions are: Large population, rnadom mating, no mutations, no migration (immegration or emmigration from the population) and no natural selection. If all those conditions are met it states that ...

SE
Answered by Suzannah E. Biology tutor
3777 Views

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