Which actions are part of a system of methodical tests and refinements specific to technological design? A. Documenting, tinkering, testing
B. Tinkering, presenting, testing
C. Testing, documenting, presenting
D. presenting, tinkering, testing

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.