A uniform mettalic bar of length 100cm and mass 40kg is supported horizontally by two vertical spring balances A an B balance A is 20cm from one end while balanceB is 30cm from the other end find the reading of each individual balance AB

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.