Recent content by roshan2004

  1. R

    Graduate Eigenvector of Pauli Matrix (z-component of Pauli matrix)

    I have had no problem while finding the eigen vectors for the x and y components of pauli matrix. However, while solving for the z- component, I got stuck. The eigen values are 1 and -1. While solving for the eigen vector corresponding to the eigen value 1 using (\sigma _z-\lambda I)X=0, I got...
  2. R

    Gravitational potential energy of a system

    I think it will be very tiresome to pick each and every particle and work out their work done in bringing them from infinity to that position. There must be some quick method...
  3. R

    Gravitational potential energy of a system

    I think there are 8 masses in here.
  4. R

    Gravitational potential energy of a system

    Homework Statement What is the gravitational potential energy of a system of 8 masses of 10 kg each placed at the corners of a cube of length 0.25 meter apart. Homework Equations U=-G*m1*m2/r The Attempt at a Solution I have actually taken one particle pair at a time and sum all...
  5. R

    Undergrad How Many Images Does a Zone Plate Produce with an Object in Front?

    Sorry, I got it- It is multiple images.
  6. R

    Undergrad How Many Images Does a Zone Plate Produce with an Object in Front?

    How many images does a zone plate produces when an object is placed infront of zone plate?
  7. R

    Undergrad Forced Vibration: Amplitude Of Vibration Changes Periodically?

    So, does it decays exponentially then... ( I mean amplitude of the forced vibration)
  8. R

    Undergrad Forced Vibration: Amplitude Of Vibration Changes Periodically?

    In forced vibration, amplitude of vibration changes periodically. Is it right ? I think it is a correct statement, since the amplitude of vibration is a periodic function.
  9. R

    High School Finding the nth Term of a Sequence: 6+13+24+39+...

    It is actually 6,13,24,39...Their differences are in Arithmetic progression
  10. R

    High School Finding the nth Term of a Sequence: 6+13+24+39+...

    How to find nth term of the sequence 6+13+24+39+...
  11. R

    Graduate Standing Waves in Bohr's Circular Orbit: Interference Explained

    If electron waves weren't standing waves in Bohr's circular orbit, why and how would the waves interfere ?
    • roshan2004
    • Thread
    • Circular Circular orbit Interference Orbit Standing waves Waves
    • Replies: 1
    • Forum: Quantum Physics
  12. R

    Graduate Time Dilation in Spinning Cylinder Room: Can We Break the Speed of Light?

    In the spinning cylinder room example mentioned in relativity, where the nearest distance between 2 point is actually curved line.. and light take a straight pass right, which is farer than the curved line due to time dilation in the middle of the room due to a smaller acceleration than side of...
  13. R

    High School Work Energy Power: Where Does the Energy Come From?

    Since your position is changing, you are gaining potential energy and as you are pushing the bicycle, the potential energy comes from yours muscles, I mean -muscular energy
  14. R

    High School Comparing Bobby and Cindy's Math Test Scores: Who Performed Better?

    Bobby and Cindy are in different math classes. Bobby got a 75 on his test and Cindy got a 70 (surprisingly low for children of an architect). Bobby’s class had a mean of 80 and a standard deviation of 5. Cindy’s class had a mean of 75 and a standard deviation of 10. Who did better on their test...
  15. R

    Undergrad Maxima of Two Waves Beating Together: 0 or Infinity?

    Two waves of equal intensities "I" beat together, what is the maxima of the beat equal to ? Is it 0 or infinity,or other answers... I just couldn't get it