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  2. List of Cambridge International Examinations Ordinary Level ...

    en.wikipedia.org/wiki/List_of_Cambridge...

    Cannot be combined with syllabuses 0452 & 0614 , 4345, 7092 & 7175 (O Level).The Cambridge O Level Principles of Accounts 7110 syllabus has been revised and now has a new title and code: Cambridge O Level Accounting 7707. The last examination series for Cambridge O Level Principles of Accounts 7110 will be November 2019. [4] link: CIE 7115

  3. Past paper - Wikipedia

    en.wikipedia.org/wiki/Past_paper

    Furthermore, these past examination papers are useful for students to prepare for national examinations such as PSLE, N Level, O Level and A Level. Before the EPH could publish past examination papers in the form of books, the publisher must first seek permission from SEAB and MOE, as failure to do so may result in copyright infringement.

  4. List of unsolved problems in physics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.

  5. GCE Ordinary Level (United Kingdom) - Wikipedia

    en.wikipedia.org/wiki/GCE_Ordinary_Level_(United...

    O-level logo. The General Certificate of Education (GCE) Ordinary Level, also called the O-level or O level, was a subject-based academic qualification.Introduced in 1951 as a replacement for the 16+ School Certificate (SC), the O-level would act as a pathway to the new, more in-depth and academically rigorous A-level (Advanced Level), in England, Wales and Northern Ireland.

  6. Conservation law - Wikipedia

    en.wikipedia.org/wiki/Conservation_law

    In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of mass-energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge.

  7. Specific potential energy - Wikipedia

    en.wikipedia.org/wiki/Specific_potential_energy

    The potential has units of energy per mass, e.g., J/kg in the MKS system. By convention, it is always negative where it is defined, and as x tends to infinity, it approaches zero. The gravitational field, and thus the acceleration of a small body in the space around the massive object, is the negative gradient of the gravitational potential ...

  8. Electric potential energy - Wikipedia

    en.wikipedia.org/wiki/Electric_potential_energy

    The electrostatic potential energy is mutually shared by and , so the total stored energy is = [() + ()] This can be generalized to say that the electrostatic potential energy U E stored in a system of n charges q 1 , q 2 , …, q n at positions r 1 , r 2 , …, r n respectively, is:

  9. Units of energy - Wikipedia

    en.wikipedia.org/wiki/Units_of_energy

    In physics and chemistry, it is common to measure energy on the atomic scale in the non-SI, but convenient, units electronvolts (eV). 1 eV is equivalent to the kinetic energy acquired by an electron in passing through a potential difference of 1 volt in a vacuum. It is common to use the SI magnitude prefixes (e.g. milli-, mega- etc) with ...