How do you convert 2.998 m/s to km/hr?

In order to convert speed from m/s into km/h, you need to multiply the number by 18, and then divide it by 5. 2.998 m/s = 10.7928 km/hr

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.

Ray 2 should cross through the focal point on the right side of the lens.