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Outline how Lorenz and Harlow studied attachment using animals. (6 marks)

I would suggest an exemplar answer to this question to be:Lorenz studied imprinting in goslings by dividing the eggs from a mother, hatching, and rearing them in different environments. Half were left wit...

Answered by Hannah S. • Psychology tutor

21822 Views

Why is the first ionisation energy of barium larger than the first ionsiation energy of caesium?

Barium has one more proton than caesium. The outer electrons of both elements are in the same shell so they feel the same shielding effect. However, as barium has one more proton, barium's outer electrons...

Answered by Jeremy L. • Chemistry tutor

5112 Views

Rearrange the following to make c the subject: 11a + 5c = d ( 6 + 2c )

Steps: (1) Multiply out the brackets on the left handside [11a + 5c = 6d + 2dc]. (2) Put all terms containing c on one side and all other terms on the other side of the equation [ 5c - 2dc = 6d - 11a]. (3...

Answered by Jeremy L. • Maths tutor

3283 Views

Outline the circulation of blood and the physical changes of the heart during the cardiac cycle.

The cardiac cycle is split into 2 main phases: systole where the heart contracts and ejects blood out from the heart and diastole where the heart relaxes and fills with b...

Answered by Aishah M. • Biology tutor

2228 Views

If a circle passes through points (2,0) and (10,0) and it has tangent line along the y-axis, then what are the possible equations of the circle?

Firstly it will help to draw a diagram of our two points along the x-axis, from this we can find out the x co-ordinate of the center of the circle as these points form a chord of the circle. Where in this...

Answered by Kieran M. • Maths tutor

3568 Views