Which of the following statements not true? select one: a. a nucleus has a positive charge. b. protons have a positive charge. c. neutrons have no charge. d. neutrons have a negative charge

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information

Idon’t quite understand this problem

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.