Which of the energy bar graphs and corresponding energy pie charts shows the energy present at the position circled in the picture?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Avoltaic cell converts chemical energy to

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above