5. Your electric utility company sends you a monthly bill informing you of the number of kilowatt- hours you have used that month. a. Is the utility charging you for energy or power? Explain. b. Calculate how many joules your 1600W blow drier transfers if you dry your hair in 5.0 min. 6. Three identical springs (A,B,and C), each with an unstretched length of 1.0 m and spring constant of 2.0 N/m are attached on the edge of a circular hoop with radius of 4.0 m as shown in the bird's eye view to the right. A small object is attached to each spring and comes to rest in the center of the hoop. (-10m a. Calculate the work done in attaching the springs to the object. The mass is moved 3 m to the left, as shown to the right. b. Was the work done to move the object positive or negative? Justify your answer. 5.0m fs-6.8 m 2.0 m Ax = 3.0 m c. The object is released and returns directly to its original position in 2.5 s. Calculate the power done by the springs in returning the object to this position. B