2cm 4 cm o 2.0 pc -4.0 pc 2 cm 2.0 c 4 cm -6.0 hc using the coordinate system given, calculate the value of the electric field at the position of charge q. important: you must write your answer in vector notation with associated cartesian basis unit vectors (i and ſ). important: you must to solve the problem symboli- cally first, and then you also subsequently need to solve it numerically. in other words: . first, you must define symbolic parameters q and d such as q where q = 1.0 c and d = 2.0 cm and then restate the problem in terms of these symbolic parameters, . you then determine the field in terms of these symbolic parameters only. put a box around your symbolic answer. only after you have solved the problem symbolically should you (finally) plug in nu- merical values for q and d to calculate the value of the electric field. now also box your numerical answer. also determine the electric force on charge q. again, give your answer symbolically first, then plug in numbers. always box your final answers

Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i.e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

Which is an example of an exothermic process?