Physics

14-15 Electrostatics Answers 1C 2C 3E 4B 5D 6E 7E 8D 9D 10B 11C 12E 13B 14C 15C 16D
Text automatically extracted from attachment below. Please download attachment to view properly formatted document.
---Extracted text from uploads/physics/14_15_electrostatics_answers_1.docx---

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]

Mrs Patek has three pairs of capri pants, a black pair, a ?tan pair and a blue pair. She also has two different T-?shirts, one white and one pink. Make a tree diagram to ?show all the possible outfits. Counting Principle What is the probability you will select the black capri pant and the pink T-?shirt when selecting an outfit at random? Lindsey flips a coin and rolls a number cube at the same time. Draw a tree diagram to display the possible choices. What is the probability you will get a heads and an even number? 1.) How many possible outcomes are there for flipping a coin ?three times? 2.) P(exactly two heads)?3.) P(one head) 4.) P(three tails)?5.) P(at least two tails) Draw a tree diagram to show all the possible outcomes for ?flipping a coin three times.