Notices

Search:

Type: Posts; User: mathman

Page 1 of 5 1 2 3 4

Search: Search took 0.00 seconds.

  1. Replies
    33
    Views
    2,998

    The statement is confusing. Firing a bullet will...

    The statement is confusing. Firing a bullet will add momentum to the machinegun + satellite in the opposite direction from the bullet.
  2. Replies
    2
    Views
    1,431

    This should be in classical physics, not quantum...

    This should be in classical physics, not quantum physics.
  3. Replies
    4
    Views
    1,037

    Simple harmonic motion - Wikipedia, the free...

    Simple harmonic motion - Wikipedia, the free encyclopedia

    Try the above.
  4. To xox. You made a mistake in your 11:26 pm...

    To xox. You made a mistake in your 11:26 pm post. m1 = 2, not 1.

    The 2 kg block starts out at .7 and ends at 0.
  5. Write down the equations for conservation of...

    Write down the equations for conservation of energy and conservation of momentum. (The problem is one dimensional). The two unknowns are the before and after velocities of the 2 kg. block. The...
  6. In general V=IR.

    In general V=IR.
  7. Replies
    3
    Views
    832

    It is possible.

    It is possible.
  8. Gobbledegook.

    Gobbledegook.
  9. Replies
    1
    Views
    729

    no

    no
  10. Replies
    21
    Views
    1,273

    This is a major open question in current physics....

    This is a major open question in current physics. Specifically the big bang should have produced an equal amount of matter and anti-matter. What happened to the anti-matter? There is no solid...
  11. Replies
    6
    Views
    2,571

    Higgs boson - Wikipedia, the free encyclopedia...

    Higgs boson - Wikipedia, the free encyclopedia

    Try above.
  12. Replies
    60
    Views
    3,096

    Time dilation is what a distant observer sees. ...

    Time dilation is what a distant observer sees. Locally time passes normally.
  13. It takes 80 calories to melt 1 gram of ice. The...

    It takes 80 calories to melt 1 gram of ice. The water/ice ratio depends on the amount of heat (cooling) applied.
  14. Gravity is a force, not energy.

    Gravity is a force, not energy.
  15. Replies
    2
    Views
    840

    A proton is not an elementary particle. An...

    A proton is not an elementary particle. An electron is.
  16. Thread: New star?

    by mathman
    Replies
    4
    Views
    718

    Ignite in what sense - chemical or nuclear...

    Ignite in what sense - chemical or nuclear fusion? In either case the answer is no.
    Chemical - the gas giants are mainly H and He. To ignite you need O, which you don't have in any significant...
  17. It is probably too early to tell. New theories...

    It is probably too early to tell. New theories in science go through several stages. Proposal, analysis by peers to see it makes sense, comparison with existing observations, design of crucial...
  18. Replies
    6
    Views
    899

    From what I've read, MOND is seriously flawed.

    From what I've read, MOND is seriously flawed.
  19. We don't detect them. We "know" they are there...

    We don't detect them. We "know" they are there based on cosmological model.
  20. We don't see them and their light never gets here.

    We don't see them and their light never gets here.
  21. Replies
    0
    Views
    1,313

    probability in computer hearts

    I just completed a game of hearts on the computer (Microsoft version). The game took four hands, the absolute minimum. All four hands were moon shots. I made two and two other players each made...
  22. Replies
    6
    Views
    1,131

    up quark mass = 2.3{+0.7−0.5} MeV down quark...

    up quark mass = 2.3{+0.7−0.5} MeV
    down quark mass = 4.8{+0.5−0.3} MeV

    As you can see these masses are very imprecise, so playing number games is meaningless.
  23. up quark mass = 2.3{+0.7−0.5} MeV down quark...

    up quark mass = 2.3{+0.7−0.5} MeV
    down quark mass = 4.8{+0.5−0.3} MeV

    As you can see these masses are very imprecise, so playing number games is meaningless.
  24. The numbers will be different.

    The numbers will be different.
  25. The numbers you are using for the quark masses...

    The numbers you are using for the quark masses depend entirely on the units. You could use atomic mass units, mutiples of electron mass, grams, or ounces and you will have different numbers. Your...
Results 1 to 25 of 112
Page 1 of 5 1 2 3 4