According to the law of conservation of energy, which statement must be true?
OA. A system cannot take in additional matter.
O B. Energy that is transferred cannot be transformed into a different
OC. The total energy of a system can increase only if energy enters the
type of energy.
system.
OD. The total energy in a system can only decrease over time.
SUBMIT

Question 7 [2 marks] in the circuit below, the electromotive force generated by the battery is e = 6.0 v, and the resistances are r1 = r4 = 1.0 q, r2 = r3 =2.0 q. r. the power delivered by the battery to the circuit is closest to a. 6 w в. 12 w с. 15 w d. 18 w e. 20 w final exam autumn 2014 page 5 of 9 68037 physical modelling faculty of science [2 mark] question 8 with reference to question 7, the current through resistor r2 is closest to a. 1 a в. 2 а c. 3 a d. 4 a e. 6 a

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

What is the most useful equation for electric power?