Best summarizes the law of conservation of energy?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.