The Galex Observatory was a recent Observatory. That was launched to observe over a half a billion galaxies going back to when our universe was just about 3 billion years old. It used wavelengths of higher energy than visible light. Which of these could describe the wavelengths used by the Galex Observatory to make observations in space

Ibelieve your answer is b.hope this : )

250✖️100 to get you answer

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.