Suppose that a car traveling to the west (-x direction) slows down uniformly as it ap- proaches a traffic light. Which statement concerning its acceleration must be correct? (a) Its acceleration is positive. (c) Its acceleration is zero. (b) Its acceleration is negative. (d) Its acceleration is decreasing.

Gas will most likely  fill the container 

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.

Well it depends on the object or substance