Fizyyyka Pomocy! Zadanie w załączniku tylko 1 :)

[latex]W = frac{U^2 * t }{R} [/latex] [latex][ W ] = [ frac{V^2 * s}{ frac{V}{A} } ] = [ V^2* s * frac{A}{V } = [ V * s * A ]= [ J ][/latex] [latex]W = I^2 * R * t [/latex] [latex][ W ] = [ A^2 * frac{V}{A} * s ] = [ A * V * s ] = [ J ] [/latex] zad. b Ep = E k [latex]mgh = frac{mV^2}{2} 2mgh = mV^2 /: m V^2 = 2gh V = sqrt{2gh} [/latex] zad.c 1 Ah = 1 C/s * 3600 s = 3600 C zad.2 f = 19 kHz = 19000 Hz = 19 *10³ Hz V = c = 3 *10⁸ m/s λ = ? [latex]V = lambda * f [/latex] [latex]lambda = frac{V}{f } [/latex] [latex]lambda = frac{3 *10^8 frac{m}{s} }{19 *10^3 frac{1}{s} } [/latex] [latex]lambda = 0,16 *10^5 m = 1,6 *10^4 m[/latex] ostatnie zad. niepełna treść