Answer Happy

Explain the answers of the question.
Reference code 13N.2.SL.TZ0.5
This question is in two parts. Part 1 is about simple harmonic motion (SHM) and waves. Part 2 is about voltage- current (V-) characteristics. Part 1 Simple harmonic motion (SHM) and waves Part 2 Voltage-current (V-)) characteristics The graph shows the voltage-current (V- 1 characteristics, at constant temperature, of two electrical components X and Y. 7.0 6.07 Y 5.0+ 4.07 V/V 3.0- x 2.0+ 1.04 0.0+ 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 I/ mA a. [2] b. [7] * A particle P moves with simple harmonic motion. State, with reference to the motion of P, what is meant by simple harmonic motion. * Use the graph opposite to determine for the motion of P the (i) period. (ii) amplitude. (iii) displacement of P from equilibrium at t=0.2s.

C. [5] “The particle P in (b) is a particle in medium M1 through which a transverse wave is travelling. (i) Describe, in terms of energy propagation, what is meant by a transverse wave. (ii) The speed of the wave through the medium is 0.40ms-7. Calculate, using your answer to (b)(i), the wavelength of the wave. (iii) The wave travels into another medium M2. The refractive index of M2 relative to M1 is 1.8. Calculate the wavelength of the wave in M2. . d. [3] * Outline, with reference to the graph and to Ohm's law, whether or not each component is ohmic.

e. [8] Components X and Y are connected in parallel. The parallel combination is then connected in series with a variable resistor R and a cell of emf 8.0V and negligible internal resistance. 8.0V R X Y The resistance of R is adjusted until the currents in X and Y are equal. (i) Using the graph, calculate the resistance of the parallel combination of X and Y. (ii) Using your answer to (e)(i), determine the resistance of R. (iii) Determine the power delivered by the cell to the circuit.