Claudia carried a box that weighed 40 N up the stairs. She did 600 J of work in 10 seconds. How much power did she have? O A. 40 W B. 15 W C. 6,000 W D. 60 W ​

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.