Recent content by Abdlellah

  1. A

    Misunderstood Thermodynamic question

    I'm using my iPad so I can't upload it. I'll upload it once I get home. Thank you toooooo much
  2. A

    Misunderstood Thermodynamic question

    Oooooh I got it thank you very much :D I made the straight line because its constant
  3. A

    Misunderstood Thermodynamic question

    i changed my answer. the R is constant at 300 K so i put the point at 300 K is it now correct ?
  4. A

    Misunderstood Thermodynamic question

    the value of R at 300 is 0.2 something so i calculate it and plot it to the graph and that what i got
  5. A

    Misunderstood Thermodynamic question

    Sorry I'm really bad in this :( This is the general formula cp = 7/2 R What is the values of R that I have to put it. Im thinking to calculate the Cp by taking the R value of O2 from table. But I will get only one point how I would graph it
  6. A

    Misunderstood Thermodynamic question

    I have just the general formula of diatomic !
  7. A

    Misunderstood Thermodynamic question

    Homework Statement Plot cp as a function of temperature for O2? How does this compare with the cp expected for a diatomic ideal gas. Add this constant value to your plot. At what temperatures does the real value of cp approach that expected for a diatomic ideal gas. Homework Equations...
  8. A

    Two masses m1=5 kg and m2=9 kg are connected by a string which passes over

    Could u please tell me the final answer ?
  9. A

    Two masses m1=5 kg and m2=9 kg are connected by a string which passes over

    i answered the first box like that but I am not sure a= (Fa - Fr)/m a= 49-4.9/(5) = 8.82 because it is in the X axis so no angle. in the second part i don't know what i should do
  10. A

    Two masses m1=5 kg and m2=9 kg are connected by a string which passes over

    Homework Statement two masses m1=5 kg and m2=9 kg are connected by a string which passes over a massless frictionless pulley. the masses are moving with an acceleration a as shown. the coefficient of kinetic friction between m1 and surface of the table is 0.1 calculate the acceleration of...
  11. A

    Piston problem ( closed system )

    Homework Statement 1. A piston cylinder arrangement ( A = 0.25 m^2, P1= 200 KPa, V1= 0.05 m^3. is loaded with a linear spring. in the current configuration the spring exerts no force on the piston head. if the atmospheric pressure is 101 KPa, what is the mass of the piston head. Heat is now...