Hierdie Graad 10 Fisiese Wetenskappe Notastel verskaf al die nodige inligting en voorbeelde om jou te help om die konsepte te verstaan wat jy gedurende Kwartaal 1 tot 4 gaan leer. Dit bevat kleurvolle beeldmateriaal en verduidelikende voorbeelde om leer makliker en aangenamer te maak. Met hie...
, WETENSKAPLIKE NOTASIE
LENGTE / AFSTANDE
WORTELS VAN EKSPONENTE Neutron- of protonradius 10−15 m
Atoom 10−10 m
W Stap 1 : Herskryf getal sodat dit ‘n ewe eksponent het Virus 10−7 m
Vel papier 10−4 m
W Stap 2 : Bepaal vierkantswortel van syferterm + deel
Vingerbreedte 10−2 m
eksponent deur 2 (kry antwoord) Lengte van voetbalveld 102 m
Hoogte van Everest 104 m
√3,6 × 103 √5,3 × 107 Aarde se omtrek 107 m
Aarde → Son 1011 m
= √36 × 102 = √53 × 106 Afstand na naaste ster 1016 m
= √53 × 10(6÷2) Naaste sterrestelsel 1022 m
= √36 × 10(2÷2)
Verste sigbare sterrestelsel 1026 m
= 6 × 10 = 60 = 7,3 × 103 TYDINTERVALLE
Lewensduur (baie onstabiele deeltjie) 10−23 s
Lewensduur (radioaktiewe elemente) 10−22 s tot 1028 s
Lewensduur (muon) 10−6 s
Tyd tussen menslike hartklop 100 s = 1 s
OP JOU SAKREKENAAR Een dag 105 s
Een jaar 3 × 107 s
Menslike lewe 2 × 109 s
Lengte van opgetekende geskiedenis 1011 s
→ om ‘n getal in wetenskaplike notasie in te tik, gebruik die Mense op aarde 1014 s
Lewe op aarde 1017 s
[ouer modelle sakrekenaars > ] -toets vir getalle van die 10de mag
Ouderdom van heelal 1018 s
BYVOORBEELD: VERGELYKENDE MASSAS
W 6 × 103 > > 6000 Elektron 10−30 kg
W 3 −4
6 × 10 × 3,5 × 10 > Proton / Neutron 10−27 kg
DNA-molekuul 10−17 kg
> 2.1 Bakterie 10−15 kg
Muskiet 10−5 kg
Pruim 10−1 kg
Persoon 102 kg
Skip 108 kg
Aarde 6 × 10−24 kg
Son 2 × 1030 kg
Sterrestelsel 1041 kg
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