PILNE Hej Potrzebuje pilnie rozwiazania zadania 1, 2, 3, 8 jasno i dokładnie dzieki wielkie:)
zad.1
q₁ = q₂ = 0,1 C
r = 1 m
k = 9 *10⁹ N * m² / C²
F = ?
F = k * q₁*q₂ / r²
F = k * q² /r²
F = 9 *10⁹ N * m² / C² * ( 0,1 C)² / ( 1 m)²
F = 0,09 *10⁹ N
zad.2.
r = 3 r
F₁ = k * q₁*q₂ / ( 3 r )²
F₁ = k * q₁*q₂ / 9 r ²
siła zmaleje 9 razy
zad.3.
t = 10 s
I = 10 A
q = ?
I = q/ t
q = I * t
q = 10 A * 10 s = 100 C
zad. 8
P = 2000 W= 2 kW
t = 20 min = 20/60 h = 1/3 h
t = 1/3 h * 30 dni = 10 h
1 kWh = 0,5 zł
W = ?
P = W / t
W = P * t
W = 2 kW * 10 h
W = 20 kWh
20 kWh = x
x = 20 kWh * 0,5 zł /1 kWh
x = 10 zł
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zad.1
q₁ = q₂ = 0,1 C
r = 1 m
k = 9 *10⁹ N * m² / C²
F = ?
F = k * q₁*q₂ / r²
F = k * q² /r²
F = 9 *10⁹ N * m² / C² * ( 0,1 C)² / ( 1 m)²
F = 0,09 *10⁹ N
zad.2.
r = 3 r
F = k * q₁*q₂ / r²
F₁ = k * q₁*q₂ / ( 3 r )²
F₁ = k * q₁*q₂ / 9 r ²
siła zmaleje 9 razy
zad.3.
t = 10 s
I = 10 A
q = ?
I = q/ t
q = I * t
q = 10 A * 10 s = 100 C
zad. 8
P = 2000 W= 2 kW
t = 20 min = 20/60 h = 1/3 h
t = 1/3 h * 30 dni = 10 h
1 kWh = 0,5 zł
W = ?
P = W / t
W = P * t
W = 2 kW * 10 h
W = 20 kWh
1 kWh = 0,5 zł
20 kWh = x
x = 20 kWh * 0,5 zł /1 kWh
x = 10 zł