6. Automobil, který za sebou táhne přívěs, jede stálou rychlostí 72 km/h. Jak velká tažná síla působí na přívěs při stálém výkonu
motoru 45 kW?

The answer is frictional force

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.

The sunlight shines uv radiation on earth,a microwave oven radiates waves on food