I had the AS practical today and it was easy (hope that doesn't mean I missed the point!). Therefore the A2 one should be really easy!
Hope it went well for everyone else today!
thermo or thermal paste?
I have heard of thermal paste - you put it between your processor chip and the heatsink in a computer in order to increase the efficiency of the heat transfer
Ok, ta!
A manufacturer of filament lamps for use as a night light in childrens bedrooms is concerned about the surface temperature of the glass envelope after the lamp has been left on for some time. The surface temp must not be too high, otherwise danger of burns or fire resulting from...
Help! A2 physics planning exercise!
Is anyone doing the A2 OCR physics planning exercise? I have just finished the AS one that soooooo many people have been talking about (I am resitting it from last year!) but now have the A2 one to do.
It is the one with the surface temperature of the...
You have to write about improvements you could make even though we aren't doing the experiment.
i used polyamide as has a low yong modulus value (2.4 GPa). Most people in my college have used aluminium as also has low young modulus.
AS practical
Yep! I'm resitting it because I didn't do very well in the waves paper. Last year my planning and my practical were fine but I almost failed the waves paper. For all you doing AS this year, concentrate on waves because it is a major pain resitting the planning and practical as well...
My physics teacher has just sed that epoxy adhesive is good as it is strong but also has give which is good for this experiment! (I'm at a boardig school so my physics teacher is still here!)
i think that some of u r making it more complicated than necessary. You don't need to worry about wheatstone bridges, a voltmeter and an ammeter will be fine and calculate the resistance from V=IR.
superglue shud be fine as it shouldn't actually get hot anyway. I thought of using epoxy adhesive but I think that it is not ok to use as it has give and is flexible. Safety precautions: safety goggles, nothing on floor to trip over, no water near electricity, use low current as less harmful but...