Which of the following shows that an energy transformation has taken place? a. matter is destroyed b. heat is produced c. matter is created d. there is no change

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton