How does a photocopier use static electricity? a. positively charged ink is attracted to negatively charged paper c. negatively charged toner is attracted to a positively charged image b. positively charged ions power the machine d. negatively charged ink is repelled from the original onto the copy plate

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping