Physics: Astrophysics: Units
Bayani Gaba-gaba
The astrophysics section shares its units with forces and motion because orbital calculations use the same mechanics. Speed, distance, time, mass, force and gravitational field strength all carry the same SI units you have already met.
This reference lists the seven units for the astrophysics section and highlights the enormous scales involved when applying them to planets, stars and galaxies.
Manufura
- Use the following units: kilogram (kg), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s), newton/kilogram (N/kg)
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Physics: Astrophysics: Units. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
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- Gravitational field strength is measured in: A) m/s B) N/kg C) kg/m3 D) Pa Answer: B
- How many seconds are in one day? A) 3600 B) 36000 C) 86400 D) 8640 Answer: C
- The orbital speed equation is: A) v = rT B) v = 2 pi r / T C) v = T / 2 pi r D) v = r / T Answer: B
- The mass of a planet would be measured in: A) Newtons B) Pascals C) Kilograms D) Joules Answer: C
- Which is the correct conversion? A) 1 year = 3.16 x 10^5 s B) 1 year = 3.16 x 10^7 s C) 1 year = 3.16 x 10^9 s D) 1 year = 3.16 x 10^6 s Answer: B
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