Mary is trying to determine the charge of an object in the lab. she observes that it is repelled by a positively charged rod. what can you say about the charge of the object? . a. the object id positively chargered b. the object is negatively charged c. the object has no change or d. the object has the equal number of positive and negative charges

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

What should the power status of a circuit be when measuring resistance with an ohmmeter?