Physics

Write up cogent responses to the following questions using complete sentences that make sense. You may use online lectures from earlier in this course, outside sources of information, the textbook, and may consult me or classmates, but must write your answers in your own words. You will be graded on whether your responses are correct, how well they are written, and how completely the question is addressed in your response. This is from textbook Physics concepts & connections fifth edition by Art Hobson 1. If you drive through a turn at constant speed, what direction is your acceleration? Based on a free body diagram identify what force is most directly responsible for the car’s acceleration in the turn. What happens to the acceleration if a car is slowing down at the same time as it is going through a turn, answering as completely as possible. Would the car need more or less force to slow down in a turn versus coasting through? 2. Let’s say that a car company has managed to double the gas mileage on its cars in the last twenty years, but now aims to double it again. Based on the second law of thermodynamics, does this seem likely? Is there a way to appear to double the gas mileage of a car that would violate the calculated maximum predicted by the second law of thermodynamics without actually violating that law of physics? Describe how this might be done or possibly is already being done. 3. What energy transformations are involved in: (a) a photovoltaic solar panel trickle charging a battery, (b) a microwave oven reheating some coffee, (c) a climber climbing up a sheer rock face, (d) a battery powering a lightbulb, (e) a slingshot slinging a small rock at a wall. Make sure to answer in terms of specific energy types rather than broad categories of energy types and note that there could be more than two energy types involved in some cases. 4. Sound and light are both waves. Describe at least three distinct phenomena or characteristics that sound and light have in common and are connected with the fact that both are waves. Describe at least three examples of ways in which sound and light are different.

Our society runs on vast quantities of cheap energy, most of which is obtained from burning easily extracted fossil fuels. But as our reserves of these “easy” fuels diminish, we are going to be forced to make increasing use of other sources of energy, such as more “difficult” fossil fuels and various types of nuclear and renewable energy. Your assignment is to do some research and write a brief paper on ONE of these other energy sources. In your paper, you will consider such factors as 1) availability of the energy source 2) the technology needed to make use of (“extract”) the energy source, 3) what the energy source may be useful for, 4) what the energy source may not be useful for, 5) the environmental impacts of using the energy source, 6) the long term sustainability of the energy source, 7) and whether the ease or difficulty of using this source makes pursuing it worthwhile.

AC Circuits 1. Please read the word document titled “AC circuit experiment”. 2. Fill out the data sheets of the “AC Circuits PROCEDURE” document with data from the “AC circuit experiment” 3. Do the calculations to fill out the charts 4. Type a neat, single spaced (12 pt font) 4 page long lab report with the following sections: “Theory/abstract”, “Results”, “Conclusion”, “Questions” from end of lab, respectively. NOTE: I have also included an example report so you may have a specific idea of what the report should look like. There cannot be any plagiarism; my school uses Turn-it-In. No sources or citations, as this is not a requirement

Introduction: Describe the Lab’s objectives, the lab activities (if more than one, and how the data will be collected (based on the lab instruction or videos) Following pages: -Include the Data Sample provided-Answer every question in the Lab instruction(if applicable), including any graph and calculation requested Last Page:-Conclusion: Analyze the result of the lab activity. What did you learn? What isyour conclusion related to the topic covered?

A100N force acting on a lever 2m from the fulcrum balances an object 0.5 m from the fulcrum on the other arm.What is the weight of the object (in newtons)What is it’s mass(in kg)

The lab is already done and the video of the experiment is attached below I will Attach Four things below,1- the lab manual.2- the video of the experiment, which you need to collect the numbers from (these are the numbers you need to use in the reports).3- Letter on how to write a lab report.4- Letter on the grading criteria (how the report will be graded).Please read the two Letters before reading the manual and watching the video.The report should be done within 24 hours.

NamePartner’s Name Class and section number Date Title Objective: Restate the objective in your own words.Materials and Instrumentation: What is measured (the physical quantity related to purpose of the experiment)Under what condition (what quantities are kept constant; what quantities are measured?)What was used to make the measurement? What is its precision? If needed, provide a labeled sketch of the setup Data: Include all measured quantities with their units and sig. fig. or uncertainty of measurement include a copy of the data table. The table of data is not required if the data is collected using the logger pro (too many data points). The table of data can be handwritten, or a computer printout. Label everything Calculations and Analysis: Include all calculation steps related to physical quantities as well as the error analysis in this section. Include any graphs. Results: Report the results of the experiment including their uncertainty of measurement in an appropriate format Discussion and Conclusion: Why did we do this experiment? (Essentially what are we testing?)How did you accomplish the objective? (Mention how what you did relates to the concepts being tested)Do your results support the concepts tested? If not, briefly mention why not.What were the potential sources of error? (Human error is not accepted)Also, answer questions stated in the lab manual

Read chap 5 Hewitt on “Newton’s Third Law of Motion” Write a summary of the key ideas in chapter 5 https://bookshelf.vitalsource.com/#/books/9780321939777/pageid/100

A peer-reviewed research journal article is to be read and summarized in your own words. You must also, clearly communicate how this article relates to Physical Science Lab. The summary is to be a minimum of two pages in length, typed double space in 12-point font. Use APA format for the layout and structure of the paper (margins. Spacing, etc.) Use APA format except you do not need an abstract since your summary is a kind of abstract already. In addition, do not use in-text citations. In-text citations are not needed since your entire summary is pertaining to only the one article that you are using, and you do not have multiple sources. Also, if you quote material from the article, use quotation marks and put the page number in parenthesis after you close the quote.

Q1. Determine the accelerations that result when a 10-N net force is applied to a 300g objectQ2. Kinetic energy K has dimensions kg. m2/s2. It can be written in terms of the momentum p and mass m as:Determine the proper units for momentum using dimensional analysis.(b) The unit of force is the newton N, where 1 N = 1 kg m/s2. What are the units of momentum p in terms of a newton and another fundamental SI unit?Q3. A long jumper leaves the ground at an angle ? above the horizontal and at a speed of 13.0 m/s and reaches a range 500 cm. Determine the angle ?? Q4. A 500.0-g object initially at rest is pulled to the right along a frictionless, horizontal surface by a constant horizontal force of magnitude 10 N. Find the work after it has moved through a horizontal distance of 200 cm.?