A boy weighs 322N and sits 2.8 m from the fulcrum of a balanced seesaw. The girl, on the opposite side of the fulcrum, sits 3.1 m from the fulcrum. What is the girl’s weight in Newtons?

Phase changes are chemical changes. true or false

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s