The mechanism above is a harmonic oscillator. It consists of two identical spheres connected by a massless spring. The two masses translate toward and away from each other and the entire system spins about its center of mass. Assume that there is no relative rotation between masses A and B. You may also assume the center of mass of the system has no velocity. Do not model the masses as particles. Do not include friction. Do not include gravity

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

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)