Billiard ball A of mass mA = 0.120 kg moving withspeed vA = 2.80 m/s strikes ball B, initially at rest, of massme = 0.140 kg. As a result of the collision, ball A isdeflected off at an angle of 30.0 with a speed vA = 2.10 m/s.(a) Taking the x axis to be the original direction of motion ofball A, write down the equations expressing the conservationof momentum for the components in the x and y directionsseparately, (b) Solve these equations for the speed, vB, andangle, 0B, of ball B. Do not assume the collision is elastic.
Chapter 23: Magnetic Flux and Faraday’s Law of Induction Flux=BAcos (thet) o Unit is Weber (Wb) o B is magnetic field o A is area Magnetic flux if used in the calculation of the induced emf Faraday’s Law: an emf is induced only when the magnetic flux though a loop changes with time Change∈ flux o Change∈time ) emf =−N ¿ Lenz’s law: an induced current always flows in the direction that opposes the change that caused it. Electric field caused by the motion of a rod: o E=Bv When a switch is added to a circuit and when the switch is closed, the current starts to increase immediately. As time goes on, the current increases more slowly and the potential difference across the inductor decrea
