Which of the following examples violates (breaks) the Law of Conservation of Energy?
converting 100k) of chemical energy to 140 kJ of mechanical energy
converting 100kJ of chemical energy to 100 kJ of thermal energy
converting 100kJ of chemical energy to 50 kJ of mechanical energy and 50 kJ of
thermal energy
O converting 100kJ of chemical energy to 25 kJ of nuclear energy and 75 kJ of
thermal energy

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

it would be c. predictability

conservation of mass

mass before something happens = mass afterwards