Abox is at rest with respect to the surface of a flatbed truck. the coefficient of static friction between the box and the surface is î¼s. (a) find an expression for the maximum acceleration of the truck so that the box remains at rest with respect to the truck. your expression should be in terms of î¼s and g. how does your answer change if the mass of the box is doubled?

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.