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Describe the main events that occur during human fertilization.

Fertilization is an example of a typical cell-to-cell recognition process between the small, assymetrical and motile sperm cell and the large, spherical, immobile egg. As soon as the sperm is released inside...
DA
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What is the difference between "tu" and "vous" and when should you use them?

In French, the personal pronoun "you" is translated in two ways: "tu" and "vous". "Tu" is the second person singular, and "vous" is the second person plural....
NF
Answered by Nicole F. • French tutor
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Define three element properties and explain how they change across the periodic table.

First, we have atomic and ionic radii which, as the name suggests, refer to the size of the atom, or the ion in the latter case. Radii increase as you go down a group (i.e. Halogens), since the number of orb...
DA
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How can I understand Aquinas' Natural Moral Law theory?

In order to respond to this question, I shall begin by eliciting the students' existing knowledge on the matter. I may ask, 'what can you tell me about Aquinas' theory?' Depending on the response, I will emp...
JH
Answered by James H. • Philosophy tutor
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A ball is projected vertically upwards from the ground with speed 21 ms^–1. The ball moves freely under gravity once projected. What is the greatest height reached by the ball?

Set out information given in question, and taking the upward direction to be positive: s (displacement) = ?, u (initial speed) = 21ms -1 , v (final speed at maximum height) = 0ms -1 , a (acceleration when fa...
SS
Answered by Shruti S. • Maths tutor
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