APA format/ 1 page and reference page Identify a current problem in physics by searching for news articles and current events. One reputable source of news in physics is Phys.org. Choose one article, and in two pages, describe how the scientific method is being used to solve the problem mentioned in the article. Identify the initial observations that identified the problem, the hypothesis, tests, and any revisions of the original hypothesis. Cite the article in APA format as well as other references you might use.
A spring is hanging down from the ceiling, and an object of mass m is attached to the free end. The object is pulled down, thereby stretching the spring, and then released. The object oscillates up and down, and the time T required for one complete up-and-down oscillation is given by the equation T = 2sqrt(m/k), where k is known as the spring constant. What must be the dimension of k for this equation to be dimensionally correct?
The coursework will be marked based on a report of the analysis. This report should include : Introduction : (1 page, 10 marks) Should outline basic strategy toward part optimisation. How do you plan to go from existing part to new design capable of accommodating new motor. Design evolution : (up to 3 pages, 20 marks) Show how part evolves to finished design. Include stress plots together with brief reason for each iteration) FE Anlaysis : (up to 5 pages, 40 marks) § A discussion of the planning of the design – eg. element type to be used, number and size of elements, use of symmetry, restraints etc. § A discussion of the design evolution and optimisation. How was optimisation achieved ? § How was the mesh created ? Were any bad elements generated ? If so what was done to try to eliminate these ? Include a printout of the mesh. § How were boundary conditions and loads / displacements applied ? § Results : Show von mises stress plot of intermediate and final designs. Manual verification : (up to 2 pages, 20 marks) Show analysis is credible by doing some manual validation of stress and deflection. Were the results generally of a magnitude which might be expected ? Explain. Conclusion : (up to 1 page, 10 marks) Wrap up exercise – reflect on experience FULL COUREWORK QUESTION IS ATTACHED
Name: ____________________ Section: ___________________ Capacitance in a Circuit Part 1: DATA TABLE: Time (seconds) Voltage (V) Questions: Was the voltage across the LED the same as the battery voltage? Why or why not? How long did it take the voltage across the capacitor to rise to the circuit voltage? Was it instantaneous? What happened to the voltage when you removed the capacitor from the circuit? How did the capacitor become discharged? Part 2: Questions: A. Did the LED light up? Why or why not? B. What did the ammeter show when you first closed the circuit? C. What did the ammeter show after a few seconds? D. How do you explain your observations? Part 3: Questions: A. What did the voltage across the capacitor do when you first closed the circuit? B. Was the voltage across the capacitor the same as the voltage of the battery? C. What did the voltage across the capacitor do when you disconnected the battery?
Name: ____________________ Section: ___________________ Reflection and Refraction Part 1 - Reflection DATA TABLE: Incident angle, ?i 30 45 60 Reflected angle, ?r What can you conclude about the relationship of ?i and ?r? Does this verify the law of reflection? Part 2 - Reflection: Step I - Find the image location, circle that point and label it “I”. Measure and record the object distance do and the image distance di. What can you say about the location of the image? Step J - Is the image real or virtual? Part 3 - Refraction and the Refractive Index of Water: Data Table Experiment Incident angle, ?i Refracted angle, ?r Index of refraction, n 1 2 3 Average value of the index of refraction, navg = _______________________. Find the percent difference between the known value and your average experimental value. Part 4 - Refraction and Refractive Index: Data Table Experiment Incident angle, ?i Refracted angle, ?r Index of refraction, n 1 2 3 Average value of the index of refraction, navg = _______________________. Find the percent difference between the known value of 1.49 and your average experimental value.
Consider the 604 N weight held by two cables shown below. The left-hand cable had tension T2 and makes an angle of 44 degrees with the ceiling. The right hand cable had tension T1 and makes an angle of 45 degrees with the ceiling.
