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Maths & Physics Help
tmisterr:
--- Quote from: astarmathsandphysics on October 06, 2008, 11:05:57 am ---Post your IGCSE questions here to get the answers back asap from someone with 3 maths/physics degrees.
--- End quote ---
hey astar i need help with question 2(a), the circuit drawing. The paper is OCT/NOV 2005 physics paper 6
Ukhti-R:
I have another question for you astar, Im realli sorry, but Im so rubbish at maths and its the day afta 2morrow
so.. how do you do Q10 a P2 1998 ??
Kim:
ok i m kind of worried i need an answer to an old paper6 physics question year 1999
A drinking straw was sealed at one end with candle wax.tyhe straw was made to float upright in water by putting a small amount of ballast into the straw.The height of the top of the straw was determined uysing a set square attached to the meter rule..The height was h
a-explain why the set square is used when taking the reading for h
b-before taking the readings for h, one of the students pushed the straw down a little.the straw then moved up and down befor coming to rest.suggest a reason why this was done.
c-the straw floats in the water so dat its top is as high as possible.For this reason the container was full of water.Suggest what would happen if the container was not quite full i.e it was three quarters full
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
astarmathsandphysics:
--- Quote from: kim on May 11, 2009, 09:22:09 am ---ok i m kind of worried i need an answer to an old paper6 physics question year 1999
A drinking straw was sealed at one end with candle wax.tyhe straw was made to float upright in water by putting a small amount of ballast into the straw.The height of the top of the straw was determined uysing a set square attached to the meter rule..The height was h
a-explain why the set square is used when taking the reading for h
b-before taking the readings for h, one of the students pushed the straw down a little.the straw then moved up and down befor coming to rest.suggest a reason why this was done.
c-the straw floats in the water so dat its top is as high as possible.For this reason the container was full of water.Suggest what would happen if the container was not quite full i.e it was three quarters full
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
--- End quote ---
a)to make the height reading accurate
b) to reduce the effect of surface tension
c)It might touch the bottom and tilt over
Kim:
THANK U SO MUCH NOW I NEED ANOTHER ANSWER SORRY FOR BOTHERING U
rays of light are reflected from the poutside of a beaker that contained siome water coloured with blue ink
a- why is it an advantage to fill the the beaker with coloured water when viewing the lamp by a ray reflected from the outside surface of the beaker?
in some questions they tell that three lamps are connected in parallel and a voltmeter connected to record the potential difference across all three lamps
where do i put the voltmeter?their is also a variable resistor to vary the brightness of all the 3 lamps
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