7. Which of the following statements is NOT true of the concept of force?
a Forces always cause objects to move.
b. Force can be measured in kilograms or Newtons depending upon the system of
measurement (metric or otherwise).
c. Spring and tension forces are examples of field forces,
d. A force is a vector quantity; there is always a direction associated with it.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!