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Samenvatting Natuurkunde Arbeid en energie HAVO
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Natuurkunde samenvatting over het onderwerp Arbeid en energie. Deze samenvatting is voor leerlingen uit 4/5 Havo.
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By: rinadziedani • 1 year ago
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Hoofdstuk 8 arbeid en energieFormules:
Arbeid: W=Fxs W = arbeid in N m
F = kracht in N
s = verplaatsing in m
Kinetische energie: 1 Ek = kinetische energie in J
Ek = m x v 2
2 m = massa in kg
v = snelheid in m/s
Totaal arbeid: Wtot = ∆Ek (Ek,eind–Ek,begin) Wtot = som van de arbeid
van alle krachten in J
∆Ek = verandering in
kinetische energie in J
Vermogen: W P = vermogen in W
P=
t W = arbeid in J
t = tijd in s
Vermogen: P=Fxv P = vermogen in W
F = kracht in N
v = snelheid in m/s
Zwaarte-energie: Ezw = m x g x h Ezw = zwaarte-energie in J
m = massa in kg
g = valversnelling m/s2
h = hoogte in m
Verbrandingsenergie vaste Ech = rm x m Ech = chemische energie in J
stoffen: rm = stookwaarde in J/kg
m = massa in kg
Verbrandingsenergie Ech = rv x V Ech = chemische energie in J
vloeistoffen: rv = stookwaarde in J/m3
V = volume in m3
Nuttige energie: Enuttig = W = F x s Enuttig = nuttige energie in J
W = verricht arbeid in J
F = kracht in N
s = verplaatsing in m
Wet van energie behoud: Etot,in = Etot,uit Etot,in = som energievormen
begin in J.
Etot,uit = som energievormen
eind in J.
Rendement: Enuttig n = rendement
n= x 100%
Ein Enuttig = nuttige energie in J
Ein = totale energie in J
Arbeid van wrijvingskracht: Q = Fw x s Q = warmte in J
Fw = wrijvingksracht in N
Binas tabellen:
Stookwaarden 28B
Formules 35A
Grootheden en eenheden 4/7
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