The big bang theory states that the sun will eventually burn out and collapse the universe was created from a cosmic explosion the universe is expanding and will continue to expand the universe was formed from a collision between two galaxies

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Can anybody me with this? ? (picture included.)

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.