The real image of a tree is magnified -0.085 times by a telescope's primary mirror. If the tree's image forms
35 cm in front of the mirror, what is the distance
between the mirror and the tree? What is the focal
length of the mirror? What is the value for the mirror's
radius of curvature? Is the image virtual or real? Is the
image inverted or upright?

Sublimation- which change of state is shown in model

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.

Answer(a)   the matererials that are in contact, the two materials and the nature of their surfaces/// (b)/// the force pushing the two surfaces together, pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other