What is the best description of black body radiation?
a. radiation that comes from a heated object
b. radiation thats always invisible
c. radiation from an object with high electrical charge
d. gamma radiation from interstellar space

The answer is a.  i hope this

During the 1800s. hope this !

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.