Edexcel A2 Physics Unit 5 'Physics from Creation to Collapse'

what did you put for the 2 assumptions.
lung question?

mass,temperature constant

I put assumptions: constant temperature and air behaves as an ideal gas..

I think it should be mass and temperature.

Would Temperature and Number of Molecules staying constant be right?

Would Temperature and Number of Molecules staying constant be right?

yup. but still im worried sick about the paper cuz i did A LOT of bloody careless mistakes. so freaking worried.

yup. but still im worried sick about the paper cuz i did A LOT of bloody careless mistakes. so freaking worried.

dont be.
Physics=low boundaries(i hope)
Where are you going for medicine,if you dont mind me asking?

I think it should be mass and temperature.

What did everyone get for the Initial Activity of the radioactive source given to patients after 24 hours?

What did everyone get for the Initial Activity of the radioactive source given to patients after 24 hours?

I'm pretty sure we both are correct. If air does not behave as an ideal gas, pV = NkT cannot be applied.

This confused me.. I had to do it a couple times so I can't actually remember what I got in the end. If someone else puts their figure I might remember if I got that too.

All in all it was a nice paper. Loads better than I was expecting and incredibly better than Unit 4 I thought. I did make some daft mistakes though... like I didn't notice that in the question about the distance between the moon and the earth and gravity it said the "distance square" not the "inverse of the distance squared" so I didn't pick that as the wrong answer...

Also the multiple choice question about the russell hertzsprung diagram which was correct? Was it that white dwarfs are hotter and smaller or that giants have higher luminosity and something else?

This confused me.. I had to do it a couple times so I can't actually remember what I got in the end. If someone else puts their figure I might remember if I got that too.

All in all it was a nice paper. Loads better than I was expecting and incredibly better than Unit 4 I thought. I did make some daft mistakes though... like I didn't notice that in the question about the distance between the moon and the earth and gravity it said the "distance square" not the "inverse of the distance squared" so I didn't pick that as the wrong answer...

Also the multiple choice question about the russell hertzsprung diagram which was correct? Was it that white dwarfs are hotter and smaller or that giants have higher luminosity and something else?

This confused me.. I had to do it a couple times so I can't actually remember what I got in the end. If someone else puts their figure I might remember if I got that too.

All in all it was a nice paper. Loads better than I was expecting and incredibly better than Unit 4 I thought. I did make some daft mistakes though... like I didn't notice that in the question about the distance between the moon and the earth and gravity it said the "distance square" not the "inverse of the distance squared" so I didn't pick that as the wrong answer...

Also the multiple choice question about the russell hertzsprung diagram which was correct? Was it that white dwarfs are hotter and smaller or that giants have higher luminosity and something else?