An experiment gives the value of mass of the same object as 23.5 Kg in 1st attempt, 30 Kg in the second attempt, 25 kg in 3rd attempt. But the real mass of object is 28 Kg. Which of the following statement is correct about the experiment 1) experiment is precise
2) experiment is not precise

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.