tempo

I'm thinking in circles and would appreciate somebody's help. Firstly, is electromagnetic radiation matter? Secondly, would it make sense for a scientist to say that non-matter can interact with matter? Cheers

ah ok, i understand now.. thank you so much for writing that up.

what would you do to improve the NHS?

yeh that makes sense ^ would you also know why the halogens get darker as u go down the group? as the shells further out are being filled, and the energy jump between the further shells is smaller, i would have thought that the halogens would go from violet to red as u go down the group, as the electrons would only need a small amount of energy (hence related to red as opposed to violet) to move to a higher energy level before releasing this energy again.

hey, why do the colours of the halogens change from Fluorine to Iodine?

Actually I think it will be 50-50. 50.4451 ml of DCPIP and 49.6649 of water to be exact. Is this correct? Please...

i'd like it accurate please, so that i can get good marks for my titration investigation

I have a DCPIP solution of 3.37*10^-3 M I need it to be 1.7*10^-3 M I want 100ml of it. So how much water and how much of the 3.37*10^-3 M DCPIP do I have to put in. Also, anybody know a website or formula so I know for next time... Thanks a lot. By the way, 3.37/1.7=1.98235 and 1.7/3.37=0.504451

Which are the few cells programmed to die i.e. how are they chosen?

Thanks for the answers.

Why does programmed cell death occur? Why do all cells have a death wish? Out of interest, what happens when cells die? The first 2 qns are cambridge interview qns

thanks i did just that and it helped.

Thanks RyanJ...

A finite number divided by nothing (zero) is infinity. A finite number divided by infinity is nothing (zero). Therefore, nothing multiplied by infinite equals a finite number.

Proof is proof, or is it?

During mitosis, the centrioles form the spindle fibres in a animal cell. During mitosis, spindle fibres are still formed in a plant cell but there are no centrioles. So how does this work then?

What is the 3D structure of a cell? Is it a sphere? Is it a cuboid? When we look at cells under a microscope, are the cells flattened?

Thanks a lot

Ah I understand, thank you. But why does the flow rate have to be the same at every height? I see what you mean. That if the water molecules were connected in a column, then an increase in speed would affect the whole column of the water. But wouldn't an increase in speed increase the flow rate and the so the width of the column would have to decrease again like before???

Why is a falling column of water thinner at the bottom? I don't understand why this is...

Why are humans made of carbon? What else might they be made of? This is a Cambridge University question.... that I have no idea about. Does anyone know?

What would you do if there was one patient with smallpox? Of course the patient would have to be isolated but then what would happen to the patient...