Thursday
December 5, 2013

# Posts by ellie

Total # Posts: 191

Physics
Useful Constants: 1 Torr = 133.32 Pa; R = 8.3145 J/mol·K You have a thin metal sphere of unknown volume that contains helium gas at low pressure. You put the entire metal sphere into a bath of liquid nitrogen, and a pressure gauge on the sphere indicates a pressure of 2...

maths
is the following a function and if so is it inective, surjective or bijective: f: R-->R where f(x)=|x|

Ap Physics
it basically two tubes connected with a line, one to 10 cc has a weight put on top of it the second one 50cc has a force probe put on top of it. the weight changes force in first and causes the force and pressure in second to change. it basically using Pascal's Principal.

Ap Physics
Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...

Physics
should not F2=F1*A2/A so F2=646.8*(615.752/169.71) F2=2346.759

Physics
i tried 646.8/169.71=F2/615.752 and tried solving for F but i am getting 2346.759 and it just not right..

Physics
So since i know F/A=F/A I'm just confused on how it affects one another....

Physics
ok so. I solved first part with F/A i got .9239 kPa. second part i solved to i just added the forces. I got 3.811 kPa. The last two i am having difficulty with....

Physics
Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...

Help Physics 1 question
i tried .0003493 and -.0003493 but both are wrong where am i messing up exactly?

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