solid

  1. J

    Subatomic particles to a solid object

    Per quantum physics, the position of a particle is given by a probability function. When such particles make up a higher order system of molecules and crystals, is it reasonable to say that the existence of such a system is also non-deterministic because of the underlying non-deterministic...
  2. R

    Waves in Solid and Fluids

    Greetings to all , please i have this question : A solid can transport both longitudinal waves and transverse waves, but a fluid can transport only longitudinal waves. Why? I think because in fluids we can not construct a mass per unit length , but i am not sure about this answer , any...
  3. T

    Inertial "moment" of a solid given an inertia tensor

    Hi all, I am programming some software computing inertial forces of some moving structure. So far, the structure have been represented as a cloud of mass points. For each mass point, inertial forces are computed using some formulas like in this article...
  4. F

    Diffraction of solid edge through aperture

    Hi, I am an astronomer working on writing an article about a particular diffraction effect seen when a planet is imaged through a telescope. I wondered if anyone has any theoretical workings or references about the effect that I could add to the article. When a hard-edged planet is imaged...
  5. R

    Solid Disk

    Hello all Any help to solve these two problems? i will be so thankful. Best regards
  6. P

    Liquid copper to solid

    How much energy must be removed from the system to turn liquid copper of mass 1.5kg at 1083 degrees celsius to solid copper at 1000 degrees celsius? a. -2.49X10^5J b. -3.67X10^4J c. 2.25X10^3J d. 9.45X10^4J e. -2.78X10^3J
  7. R

    Solid Cube & Bullet

    Greetings to all Any help to solve this problem ? i will be so thankful . Note : This problem is not homework .
  8. E

    Measuring the distribution of mass in a solid object

    I am interested in measuring the distribution of mass in a solid object, specifically a tennis racket. Is there a simple way to do this? I only need to know the approximate distribution of mass along the length of the racket, which is 68.5 cm. So, for example, I could cut the racket into...
  9. J

    Crystal Symmetry Problem

    Hello guys! I have to solve a problem about crystal symmetry, but I am very lost, so I wonder if anyone could guide me. The problem is the following: Using semiclassical transport theory the conductivity tensor can be defined as: Where e is the electron charge, tau is a...
  10. L

    Calculate a derivation of a the angular speed of a solid body

    I am practicing for a mechanics exam. Please find the problem and solution in the image: I am not able to reach the solution. The question is to derivate an expression of the angular speed to obtain the angular acceleration. The angular speed is a function of the rotation angle, so...
  11. Y

    Buoyancy: solid things position in the water

    There are three things P, Q, R. The density of P is 2000 kg/m3, Q is 1000 kg/m3, R is 2500 kg/m3. If all of them are put into the water having density 1000 kg/m3, which one is the correct position of the things? Picture A or Picture B (see attachment)?
  12. C

    Help - Oil Liquid Into Solid In Rising And Cooling Water Column

    Hello, I am trying figure out a fast and simple way to create 10mm spherical balls of cocoa butter in a production line type environment. I want to avoid the time it takes to pour the mass into molds, cool them, and then have to remove them. I have an idea and would appreciate feedback and...
  13. B

    İmaginary solid world

    Anton Wilson said 'millions of particles make up this 3d solid world which does not exist according to QM'. Is this claim true?
  14. F

    Placing small liquid droplets on a solid surface

    Hi I'd like to ask you how to place small droplets (radius of droplet below 1.34mm, volume of droplet below 10uL) on a solid surface? The liquid is viscous, say, 2.5 million cSt. Please help. Thank you.
  15. timemachine2

    Can em waves that traverse solid materials, change to become em waves that get absorb

    Can em waves that traverse solid materials, change to become em waves that get absorbed by electrons, if the material is heated up, or cooled to freezing temperatures. Heating, and freezing a solid material the em waves traverse through, does have an effect on how electrons absorb em waves...
  16. timemachine2

    Are there any electromagnetic waves that traverse solid matter, while the photos also

    Are there any electromagnetic waves that traverse solid matter, while the photos also get absorbed by electrons. Is there a slight absortion? .... by some of the photons, when they hit the electrons in the atom, as they pass through say a solid piece of matter. So with all the waves in the...
  17. N

    Can EM waves like radio waves that can traverse solid matter, be combined/mixed with

    Can EM waves like radio waves that can traverse solid matter, be combined/mixed with other EM waves to become EM waves that get absorbed by? - electrons. Also can EM waves that traverse, if certain EM waves are mixed together, say three em waves combined into a single beam, as the EM waves...
  18. N

    Can any invisible EM waves that get absorbed by electrons pass through solid matter.?

    Can any invisible EM waves that get absorbed by electrons pass through solid matter.? Can any invisible EM waves that get absorbed by electrons pass through solid matter. Question 1. If you mixed any invisible EM waves, like X-rays , gamma waves, ultraviolet waves ,and micro waves with radio...
  19. N

    Can any INVISIBLE EM waves get electrons in solid matter, to

    -the same energy levels in glass. As they pass through the solid opaque matter.? So as Invisible EM waves like radio, X-rays, and gamma waves pass through say a 4 inch cubic block of black solid carbon. Do you think by mixing EM waves, and reducing, or increasing frequency, and wavelength you...
  20. N

    By mixing 3 types of invisible electromagnetic waves, as they pass through a solid ob

    -ject, could the waves raise the electron to a shell level that is the same as glass, so that light cannot be absorbed, to make the object translucent, or transparent. Is it possible for any invisible EM waves, like radio waves, ultraviolet soft, or hard X- Rays, or gamma rays, to be combined...