a) 2 centylitry = 2 *10⁻² l = 2 *10⁻² dm³ = 2 *10⁻² * 10⁻³ m³ = 2 *10⁻⁵ m³ 1 centy = 10⁻² 1 dm³ = 10⁻³ m³ b) 2 kW*h = 2 *10³ Wh = 2 *10³ J/s* 3,6 *10³ s = 7,2 *10⁶ J 1 kW = 10³ W 1 h = 3600 s = 3,6 *10³ s c) 1,5 g*cm^3 czy nie powinno być : 1,5 g/cm³ [latex]1,5 frac{g}{cm^3 } = 1,5 * frac{ frac{1}{1000}kg }{ frac{1}{1000000} m^3 } = frac{1,5 }{1000} kg * frac{1000000}{1 m^3} = 1500 frac{kg}{m^3} [/latex] 1 g = 1/1000 kg 1 cm³ = 1/1000000 m³ d)700 dm^2 = 7 *10² dm² * 10⁻² = 7 m² 1 dm² = 10⁻² m² 4 5 kPa = 5 *10³ Pa 1 kilo = 10³ zad.2. a)60km^-1 [latex]60 km ^{-1} = 60 frac{1}{1000m} = frac{60}{1000 m} =0,06 m ^{-1} [/latex] b) MW*h [latex]MWh = 10 ^{6} frac{J}{s} *3,6 *10 ^{3} s = 3,6 *10 ^{9} J[/latex] mega = 10⁶ W = J/s h = 3600 s = 3,6 *10³ s c)1000hPa = 10³ hPa 10³ *10² Pa = 10⁵ Pa hekto = 10² d)90 km/h [latex]90 frac{km}{h } = 90 * frac{1000 m }{3600 s } = 25 frac{m}{s} [/latex] e) 2hl 2 hl = 2 *10² l = 2 *10² dm³ = 2 *10² *10⁻³ m³ = 2 *10⁻¹ m³
