λ = 550nm = 550 x 10⁻⁹m h = 6,63 x 10⁻³⁴Js p = h/λ p = 6,63 x 10⁻³⁴Js / 550 x 10⁻⁹m = 0,012 x 10⁻²⁵kgm/s = 12 x 10⁻²⁸kgm/s mp = 1,672∙10⁻²⁷ kg, p = mv => v = p/m v = 12 x 10⁻²⁸km/s / 1,672 x 10⁻²⁷kg = 7,177 x 10⁻¹ = 0,7177m/s ---------------------------------------------------------------------------------------------------- Litterarum radices amarae sunt, fructus iucundiores Pozdrawiam :)
[latex]Dane:\ lambda=550nm=5,5*10^{-7}m\ c=3*10^8frac{m}{s}\ m_p=1,67*10^{-27}kg\ h=6,63*10^{-34}Js\ Oblicz:\ p=?\ V_p=?\ Rozwiazanie:\ E=frac{h*c}{lambda}\\ E=frac{6,63*10^{-34}*3*10^8}{5,5*10^{-7}}\\ E=3,62*10^{-19}J\\ p=frac{E}{c}\\ p=frac{3,62*10^{-19}}{3*10^{8}}\\ p=1,2*10^{-27}}frac{kg*m}{s}\\ p=mVRightarrow V=frac{p}{m}\\ V_p=frac{1,2*10^{-27}}{1,67*10^{-27}}\\ V_p=0,72frac{m}{s}[/latex]
