Physics

Name ________________ Date ________ Block ___ GAC Physics Topic 5: Electric Currents Ch 17 5.1 Electric potential difference, current and resistance Electric Potential difference and Capacitance 5.1.1 Sec 1, Practice A, SR pg 601 Define electric potential difference. 5.1.2 Determine the change in potential energy when a charge moves between two points at different potentials. 5.1.4 Solve problems involving electric potential difference. 5.1.12 Sec 2, Practice B, SR pg 607 Relate capacitance to the storage of electrical potential energy in the form of separated charges. 5.1.13 Calculate the capacitance of various devices. 5.1.14 Calculate the energy stored in a capacitor. Electric Current and resistance Assessment statement Teacher?s notes 5.1.5

4.1 Simple harmonic motion 1a. [4 marks] This question is about simple harmonic motion (SHM). The graph shows the variation with time of the acceleration of an object X undergoing simple harmonic motion (SHM). Determine the maximum displacement of X. Give your answer to an appropriate number of significant figures. Markscheme use of ; or or ; } (allow answers in the range of T = 7.8 to 8.0 (s) or = 0.785 to 0.805 (rad s)) ; (allow answers in the range of 4.0 to 4.25 (m)) two significant figures in final answer whatever the value; Award [4] for a bald correct answer. Examiners report Similarly, this was well done. Most appreciated the need to truncate the final answer to a sensible number of significant digits (two in this case). 1b. [2 marks]