Why electrons carry a net energy but not a net a current in case of thermal conduction

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank

Coal contains energy. a. light b. kinetic c. chemical d. mechanical