Recent content by sunbunny

  1. S

    Which Temperature Range Cools Faster According to Newton's Law of Cooling?

    thank you all for you help, I now have some ideas to work with!
  2. S

    Which Temperature Range Cools Faster According to Newton's Law of Cooling?

    Does this then mean that the body would cool at the same rate in both situations since they both have a temperature difference of 50 degrees celcius?
  3. S

    Which Temperature Range Cools Faster According to Newton's Law of Cooling?

    Hey, I'm having problems with this question: According to Newton's law of cooling, what cools faster, a person from 150 degress celcius to 100 degrees celcius or 100 degrees celcius to 50 degrees celcius in a laboratory environment? Why? I' not really sure where to start. I know the...
  4. S

    Achieving Equal Velocity: Dropping 3 Ball Bearings

    Thank you everyone for your input
  5. S

    Do formulas prevent students from understanding concepts?

    I completely agree with you! I'm a university student taking introductory physics and I've never been really strong with the conceptionalization and the thinking process that goes along with this course. I find memorizing formulas as comforting because I think that I've leaned something when in...
  6. S

    Achieving Equal Velocity: Dropping 3 Ball Bearings

    so from the vf^2 = 2ad equation, I can find the height by isolating d getting vf^2/2a But now where I'm confused at with this is how do i find the height if i do not know the final velocity?
  7. S

    Achieving Equal Velocity: Dropping 3 Ball Bearings

    the question that i have just states that they wasnt to know what heights the 3 ball bearings should be dropped from so that at impact all 3 have the same velocity. I don't think that it matters whether or not they land at the same time, just the same velocity, or that's what it seems like to me
  8. S

    Achieving Equal Velocity: Dropping 3 Ball Bearings

    Homework Statement Consider 3 ball bearings, one with a mass of 8g, one with 16g, and one with 32 g. What heights should the 3 ball bearings be dropped from so that all 3 ball bearings have the same velocity? Homework Equations I think that the relevant equation would be: vf^2= vi^2...
  9. S

    Newton's 3rd law and kinetic friction

    oh wow I'm sorry i didn't mean to put that many up, i don't know what happened
  10. S

    Newton's 3rd law and kinetic friction

    okay, I'm starting to see how it's done and how I've mixed up my FBD. I think I just need to practice some more problems. I rearanged the m1a=usm1g to a=usm1g/m1 i then substituted this value for a into: Fapplied=m2a+usm1g Thanks so much for your help, I really appreciated it! Now...
  11. S

    Newton's 3rd law and kinetic friction

    okay, I'm starting to see how it's done and how I've mixed up my FBD. I think I just need to practice some more problems. I rearanged the m1a=usm1g to a=usm1g/m1 i then substituted this value for a into: Fapplied=m2a+usm1g Thanks so much for your help, I really appreciated it! Now...
  12. S

    Newton's 3rd law and kinetic friction

    okay, I'm starting to see how it's done and how I've mixed up my FBD. I think I just need to practice some more problems. I rearanged the m1a=usm1g to a=usm1g/m1 i then substituted this value for a into: Fapplied=m2a+usm1g Thanks so much for your help, I really appreciated it! Now...
  13. S

    Newton's 3rd law and kinetic friction

    okay, I'm starting to see how it's done and how I've mixed up my FBD. I think I just need to practice some more problems. I rearanged the m1a=usm1g to a=usm1g/m1 i then substituted this value for a into: Fapplied=m2a+usm1g Thanks so much for your help, I really appreciated it! Now...
  14. S

    Newton's 3rd law and kinetic friction

    okay, I'm starting to see how it's done and how I've mixed up my FBD. I think I just need to practice some more problems. I rearanged the m1a=usm1g to a=usm1g/m1 i then substituted this value for a into: Fapplied=m2a+usm1g Thanks so much for your help, I really appreciated it! Now...
  15. S

    Newton's 3rd law and kinetic friction

    okay so would this make the horizontal component of the FBD for the board: max=Fapplied,x - Ffriction,x (m1+m2)a=Fapplied,x-usm2g,x a=Fapplied,x-usm2g,x/(m1+m2)
Back
Top