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P + p=

3428 Views

Draw a diagram that represents the electronic arrangement of a fluorine atom.

Electrons are arranged in different shells (sometimes described as an energy levels) around the nucleus with the innermost shell being filled first and then working outwards. The first shell can hold a ma...

Answered by Izabella A. • Chemistry tutor

15505 Views

Explain and evaluate the influence of Testosterone on aggression

Testosterone is suggested to be a strong influencer of aggression in males. This is a male sex hormone that is produced within the leydig cells of the testes and the adrenal cortex located within the brai...

Answered by Martin R. • Psychology tutor

7756 Views

A car costs £5,899.99, not including VAT. If the VAT rate is 20% how much does the car cost in total?

100% = £5,899.99

10% = £590.00

£590.00 x 2 = £1,180.00

£5,899.99 + £1,180.00 = £7,079.99

Answered by Helen T. • Maths tutor

3564 Views

I did a question the other day which expected me to know what cos(30) is without a calculator. How do I work it out?

There are certain angles that you can use shapes and trigonometry to work out what their cosine, sine and tangent angles are. These angles are 30, 45 and 60 degrees and there are 2 very simple but importa...

Answered by Philip H. • Maths tutor

12425 Views