Recent content by jincy34

Homework Statement The conducting box has been given an excess negative charge. The surface density of excess electrons at the center of the top surface is 31 x 10^10 electrons/m^2. What is the electric field strength at point 1...

Homework Statement A 3 nC point charge is at the center of 5 m x 5 m x 5 m cube. What is the electric flux through the top surface of the cube? Homework Equations E=kq/r^2 φ = E.A The Attempt at a Solution E = (8.99*109)(3*10-9) / 2.52 = 4.3152 N/C φ = E.A = (4.3152)(5*5) =...

I put the right value for E0. But, I am not sure if the charge I am using is right or not. Is the charge inside 60nC, 6nC or net charge?

Homework Statement What is the net electric flux through the the torus if a=-6 nC and b=60 nC ? Homework Equations Electric flux=Qin/E The Attempt at a Solution I solved with Qin being 6*10^-9 C as it is the charge inside and E0=8.85*10^-12. I got 678 for electric flux. But it...

Thank you.

Homework Statement A heat engine using a monoatomic gas follows the cycle shown in Figure. Part 2®3 is adiabat, Vi=101 cm3, Vf=668 cm3, Pi=118 kPa, T1=315 K. Find Q for process 1 to 2. Find Ws for process 2 to 3. Homework Equations PV=nRT Q=nCv(delta T) The Attempt at a...

I get to see the answer only after it is due. It is due thursday. when i tried this answer, the computer says it is wrong.

[SOLVED] conservation of energy Homework Statement From what height must an oxygen molecule fall in a vacuum so that its kinetic energy at the bottom equals the average energy of an oxygen molecule at 200 K? Homework Equations conservation of energy Eavg=3/2KbT Epot=mgh The...

Thank you very much.

you need to add phase constant to your equation.

I did, and got 0.8633 kg. But, that is wrong too.

Homework Statement A 105.05 g ice cube at -15°C is placed in an aluminum cup whose initial temperature is 73°C. The system comes to an equilibrium temperature of 24°C. What is the mass of the cup? Homework Equations Q=mc (delta T) The Attempt at a Solution the sum of total...

Thanks for your help.

If it is thermal equilibrium, wouldn't T be the same. Or is it room temperature?

I got 153182.03 Pa.