Which statement best defines a universal law? a) it is in effect some of the time. b) it is in effect at all times. c) it operates only under specific conditions. d) it changes over time.

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

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.