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PHYSICS AND SYSTEM UNITS AMOUNT

PHYSICS AND SYSTEM UNITS AMOUNT. What is measured?. Measurement. Physical quantities. Nature Observation Events. Model. Eksperimen. meansurement. tolls. Quality (Measurement Result. calibration. System Matrik. SI. presentation. prece. unit. Standard size. System unit.

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PHYSICS AND SYSTEM UNITS AMOUNT

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  1. PHYSICS AND SYSTEM UNITS AMOUNT

  2. What is measured? Measurement Physical quantities Nature Observation Events Model Eksperimen

  3. meansurement tolls Quality(Measurement Result calibration System Matrik SI presentation prece unit Standard size System unit

  4. Principal Amount : specified quantities  with a standard size Conceptual Derived Quantities : Quantities of formulated  magnitudes of principal Magnitude Physics Scalar Quantities : only has value Matematis Vector Magnitude : have the value and direction

  5. Besaran Pokok(dalam SI) Satuan(dalam SI) Massa kilogram (kg) Panjang meter (m) Waktu sekon (s) Arus listrik ampere (A) Suhu kelvin (K) Jumlah Zat mole (mol) Intensitas kandela (cd)

  6. SISTEM MATRIK DALAM SI Simbol Awalan Faktor Faktor Awalan Simbol 10-1 desi- d 1018 exa- E 10-2 senti- c 1015 peta- P 10-3 mili- m 1012 tera- T 10-6 mikro- m 109 giga- G 10-9 nano- n 106 mega- M 10-12 piko- p 103 kilo- k 10-15 femto- 102 hekto- h f 10-18 ato- 101 deka- da a

  7. Definisi standar besaran pokok • Length - meter:One meter is the path length in a vacuum through which the light within an interval of 1 / 299, 792.458 seconds.Mass - kilogram:One kilogram is the mass of platinum-iridium cylinder with a height of 39 mm and 39 mm diameter. • Time - secondOne second is 9,192,631,770 times the period (vibration) radiation emitted by cesium-133 atom in a transition between two energy levels (hyperfine levels) contained in the basic level (ground state).

  8. Derived Quantities • Example:  Speedperformed per unit time shiftunit: meters per second (ms-1)  Accelerationchange of velocity per unit timeunit: meters per second squared (ms-2) Stylemass times accelerationunit: newtons (N) = kg m s-2

  9. Dimension • Dimensions expressed the essence of a physical quantity does not depend on the units used.The distance between two places can be expressed in meters, miles, steps, etc.. Whatever the distance unit is basically a "long". Besaran Pokok Besaran Pokok SimbolDimensi SimbolDimensi M Massa Suhu Q L Jumlah Zat N Panjang Intensitas T J Waktu I Arus listrik

  10. Dimensional Analysis • A scale can be added or subtracted if it has the same dimensions. • Every tribe in the equations of physics must have the same dimensions

  11. example : Simple swing period T expressed by the formulafollowing: where l is the length of string and g acceleration of gravity with the square length unit per time. Show that the equation is dimensionally correct! question : T dimension period [T] : L Dimension lenghy [l]: Dimensions of the acceleration of gravity[g] : LT-2 p : dimensionless

  12. Apakah yang diamati ? Pengamatan Besaran Fisika Hukum Fisika Peristiwa Alam Konsep Fisika Teori Model Eksperimen Karakteristik Interaksi antar materi yang teramati Apakah yang diukur ? Pengukuran Kuantitas

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