1.Please check options and pictures within the file attached.
If the questions can be answered within a free demo session
hin a free demo session as I have my answers, but just want to confirm them, that would be greatly appreciated.
A block of mass M = 0.10 kg is attached to one end of a spring with spring constant k = 100 N/m . The other end of the spring is attached to a fixed wall. The block is pushed against the spring, compressing it a distance x = 0.04 m . The block is then released from rest, and the block-spring system travels along a horizontal, rough track. Data collected from a motion detector are used to create a graph of the kinetic energy K and spring potential energy Us of the system as a function of the block's position as the spring expands. How can the student determine the amount of mechanical energy dissipated by friction as the spring expanded to its natural spring length?
The Atwood’s machine shown consists of two blocks connected by a light string that passes over a pulley of negligible mass and negligible friction. The blocks are released from rest, and m2 is greater than m1. Assume that the reference line of zero gravitational potential energy is the floor. Which of the following best represents the total gravitational potential energy U and total kinetic energy K of the block-block-Earth system as a function of the height h of block m1?
A 2 kg block is placed at the top of an incline and released from rest near Earth’s surface and unknown distance H above the ground. The angle θ between the ground and the incline is also unknown. Frictional forces between the block and the incline are considered to be negligible. The block eventually slides to the bottom of the incline after 0.75 s. The block’s velocity v as a function of time t is shown in the graph starting from the instant it is released. How could a student use the graph to determine the total energy of the block-Earth system?
A block slides across a flat, horizontal surface to the right. For each choice, the arrows represent velocity vectors of the block at successive intervals of time. Which of the following diagrams represents the situation in which the block loses kinetic energy?
2.Macroeconomic powerpoint presentation on Inflation vs deflation. Below is the Assignment description: This course has a Final Project which is
: This course has a Final Project which is in the form of a PowerPoint presentation (you may also use Google Slides). You can choose a topic from this semester or something you come up with yourself, but your presentation must be about economics and be original (i.e. not just material verbatim that you have pulled from your text/readings or off the internet). Of course, you can still insert charts, graphs, videos, graphics and excerpts from outside sources (as long as you cite those sources!) I want to see your commentary and analysis, in your own words. IMPORTANT: Copying the work of others and representing it as your own (ex. copy and paste off of the internet or your text, OR using someone else's work and just changing a few words) is Plagiarism, a serious academic offense. I have enabled the Turnitin plagiarism checker for this assignment, to help you identify potential areas of plagiarism. Papers that are substantially plagiarized will NOT be accepted for grading. Although the format is a Power Point, I want to emphasize that this is NOT like your typical Power Point, which is basically an outline for a live presentation. Your project must be substantially loaded with content. The first slide should be your Introduction slide, the next 10-15 slides should be informational slides, the second to last slide should be your conclusion (which summarizes your presentation) and the last slide should be the reference slide. Make sure you review the rubric below BEFORE you start your project, so that you are clear on how your project will be graded. NOTE: The due date is Wednesday, 12/16. A 20% late penalty will be assessed every day for assignments submitted past this date. PLEASE contact me if you have any questions about the requirements of this project, plagiarism, citations...or any other concerns! Rubric: Final Project Presentation Criteria Ratings Pts Introduction 5.0 pts Excellent/Good 3.0 pts Satisfactory/Needs Improvement 1.0 pts Unsatisfactory 5.0 Content 35.0 pts Excellent/Good 25.0 pts Satisfactory/Needs Improvement 15.0 pts Unsatisfactory 35.0 Conclusion 5.0 pts Excellent/Good 3.0 pts Satisfactory/Needs Improvement 1.0 pts Unsatisfactory 5.0 Organization 15.0 pts Excellent/Good 10.0 pts Satisfactory/Needs Improvement 4.0 pts Unsatisfactory 15.0 References and Citations 10.0 pts Excellent/Good 7.0 pts Satisfactory/Needs Improvement 3.0 pts Unsatisfactory 10.0 Total points: 70.0