Efectúa los siguientes cambios de unidades: a) 200 g a kg b) 0,08 kg a g
e) 100 000 mm a km f) 0,05 kg a mg
3. Expresa las siguientes magnitudes en el SI:
a) 1 litro
b) 365 días c) 15 pg
4. Efectúa los siguientes cambios de unidades:
a) 36 km/h a m/s b) 60 km/h a cm/min
d) 20 m/s a km/h

Answer sample (c); // would be best because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the smallest;

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.