Energy released Definition and 75 Threads

In fracture mechanics, the energy release rate,



G


{\displaystyle G}
, is the rate at which energy is transformed as a material undergoes fracture. Mathematically, the energy release rate is expressed as the decrease in total potential energy per increase in fracture surface area, and is thus expressed in terms of energy per unit area. Various energy balances can be constructed relating the energy released during fracture to the energy of the resulting new surface, as well as other dissipative processes such as plasticity and heat generation. The energy release rate is central to the field of fracture mechanics when solving problems and estimating material properties related to fracture and fatigue.

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  1. P

    I Energy released calculation using Binding energy and mass defect

    Consider the equation X (200, 50) + n (1, 0) -> Y (120, 30) + Z (70, 20) + 11 n(1, 0) Let p be the mass of a proton, n be the mass of a neutron. BE(X) = [50p + 150n - M(X)] c^2 BE(Y) = [30p + 90n - M(Y)] c^2 BE(Z) = [20p + 50n - M(Z)]c^2 The energy released when using BE (products) - BE...
  2. A

    I How is combustion energy released?

    Is it possible that in combustion, the chemical energy of reaction is released wholly through photon emission. Say as in simple burning of wood.
  3. xpell

    Calculating Energy Released by Sodium Reacting with Water

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  4. T

    Nuclear fission calculation of energy released

    Summary:: Calculate the amount of energy in joules generated from 2 kg of uranium fuel if the uranium 235 represents 0.7% of the metal and every fission releases 200 MeV. Hi! I am stuck in this question from my exercise book : Q. Calculate the amount of energy in joules generated from 2 kg...
  5. B

    I Questions about the energy released by nuclear fission

    as far as i understand nuclear fission is the splitting of a heavy nucleus cause of a added neutron the energy you get is cause of the lost mass from binding energy. but i also read that the nuclear fission products undergo beta decay which emits beta particles gamma rays and antineutrinos so...
  6. K

    B How to calculate the energy released?

    Would Earth's moon also collapse into the Sun? In that case, how much energy will be released with that collision too? How will it compare it with the earth-sun collision? Is there a possibility of this situation arising in the lifetime of earth?Thanks in advance.
  7. SebastianRM

    What is the energy released by Tritium when it decays?

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  8. Vamsi9955

    I The energy released from antimatter annihilation -- New uses?

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  9. T

    Energy released upon ionization of different gases

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  10. A

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  11. J

    B Mechanism for Energy Released via the Strong Force in Fusion

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  12. S

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    Homework Statement The radioactive isotope radon-222 may decay spontaneously by emitting an alpha particle. The daughter nucleus is an isotope of polonium. The atomic masses of these isotopes are: Rn-222 : 222.0157 u Po : 218.00896 u He : 4.00260 u A sample of radon-222 contains 3.0 x 107...
  13. U

    I Energy released when 238U is divided into two 119Pd.

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  14. A

    I Determining the total energy released by a compost pile

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  15. A

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  16. moenste

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  17. P

    B Difference in binding energy is equal to the energy released

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  18. Nitheesh

    B Energy released in electron transition

    When an electron moves from higher energy level to lower energy level the energy doesn't released. But actually it should release. What happened to the in released energy?
  19. Amrator

    I Energy Released in Stellar Nucleosynthesis

    This is taken from page 226 in Essential Astrophysics by Lang: "The mass defect, ##ΔM##, for a nucleus containing ##A## nucleons, ##Z## protons, and ##A-Z## neutrons is $$ΔM = Z m_p + (A - Z) m_n - m_{nuc}$$ where ##A## is the mass number of the nucleus, ##Z## is the atomic number, ##m_p## is...
  20. victorhugo

    I Q: Binding energy per nucleon & energy released in reaction

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  21. C

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  22. T

    B Exploring the Mystery of Energy Released in Nuclear Explosions

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  23. Einstein's Cat

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  24. N

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  25. S

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  26. D

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  27. S

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  28. C

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  29. K

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  30. mishima

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  31. K

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  32. B

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  33. U

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    Homework Statement Homework Equations The Attempt at a Solution (a) Shown. (b) W = 975 MeV (c) Initially nucleus has volume V. Splits into two smaller particles each with charge Q/2, and volume V/2. So for each particle, Q/2 and R*(1/2)1/3 So, W' ~ 2 *...
  34. M

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  35. T

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  36. H

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  37. M

    Energy released in the fission of one uranium-235 nucleus? (extra neutron)

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  38. R

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  39. B

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  40. F

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  41. P

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  42. B

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  43. jaketodd

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  44. N

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  45. K

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  46. C

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  47. H

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  48. P

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  49. S

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  50. L

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