WE WRITE CUSTOM ACADEMIC PAPERS

100% Original, Plagiarism Free, Tailored to your instructions

Order Now!

physics essay and lab report

Want create site? Find Free WordPress Themes and plugins.

1.essay

Make sure you give a complete answer to the question including details, examples and supports.  These essays should be good full paragraphs with explanations as they are worth 20 points each.  You might want to answer the questions in a word processing document and then copy and paste the two essays into the text box and submit.  I will grade the essays and give you feedback on your responses. The two essays are:

  1. A can of diet soda floats in water, whereas a can of regular soda sinks. Explain this phenomenon in terms of density and in terms of weight versus buoyant force. Support your answer.
  1. A 10 kg iron ball is dropped onto the pavement from a height of 100 m. If half of the heat generated goes into warming the ball, find the temperature increase of the ball. The specific heat capacity of the ball is 450 J/kg•Co. Explain why the answer is the same for a ball of any mass. Show your work please.

2.lab report

This laboratory activity uses calorimetry to find the specific heat of an unknown metal. The amount of heat transferred between objects of different temperatures depends on three basic factors: (1) the mass of the objects, (2) what the objects are made of, and (3) the temperature difference between the objects. The basic assumption when performing calorimetry is that the heat lost by one object equals the heat gained by the other object. In reality, some heat will be lost to the surroundings, but this is often ignored.

Procedures

    1. Stack two Styrofoam cups together. This will reduce heat lost to the surroundings. Create a lid to the calorimeter by cutting the rim off one of the Styrofoam cups. You can cut a hole in the top of the lid or cut away part of the side of your lid so the thermometer can slide into your calorimeter without losing too much heat to the surroundings. (See below.)
    1. Bind together the nails provided in your lab kit with the included rubber band. Suspend the nails from your spring scale, and record the mass of the nails in units of grams.
    2. Add enough water to a small saucepan to cover the nails (still bound with the rubber band) so that when you add them to the water later, the nails are completely submerged. Bring the water to a boil.
    3. Use tongs to place the nails (still bound together with a rubber band) into the boiling water. Let the sample boil for at least 5 minutes. You may assume the temperature of the nails equals the temperature of the boiling water (approximately 100 °C with some variation for elevation).
    4. Use the 50-ml graduated cylinder to place 100 ml of room-temperature water into the Styrofoam cup calorimeter. (Remember the density of water is approximately 1 g/ml, so the mass of the water in the calorimeter is 100 g.)
    5. Measure the temperature of the water in your calorimeter to the nearest degree. (Be sure to measure in degrees Celsius.)
    6. Use tongs to transfer the nails from the boiling water to the Styrofoam calorimeter and quickly place the lid on top. Stir the water in the cup with the thermometer (very gently so the thermometer doesn’t break). Record the highest temperature the water reaches. (Make sure the temperature is no longer rising before you record the data.)
    7. Use the principle that the heat lost by the metal equals the heat gained by the water in the calorimeter to find the specific heat of the nails.

Repeat the experiment two more times and average the values obtained.

  1. Answer the following analysis questions:
    1. How would doubling the number of iron nails used in this lab affect the overall lab results? Explain.
    2. A student heats equal masses of iron (c = 0.45 J/g-C) and aluminum (c = 0.90 J/g-C) to the same temperature and then places the metals into separate beakers along with 50 ml of room-temperature water. Which beaker will have the highest final temperature? Explain.
  2. Write a formal lab report. The report should include the answers to the analysis questions along with the formal lab report elements PDF.

Our Service Charter

  1. Excellent Quality / 100% Plagiarism-Free

    We employ a number of measures to ensure top quality essays. The papers go through a system of quality control prior to delivery. We run plagiarism checks on each paper to ensure that they will be 100% plagiarism-free. So, only clean copies hit customers’ emails. We also never resell the papers completed by our writers. So, once it is checked using a plagiarism checker, the paper will be unique. Speaking of the academic writing standards, we will stick to the assignment brief given by the customer and assign the perfect writer. By saying “the perfect writer” we mean the one having an academic degree in the customer’s study field and positive feedback from other customers.
  2. Free Revisions

    We keep the quality bar of all papers high. But in case you need some extra brilliance to the paper, here’s what to do. First of all, you can choose a top writer. It means that we will assign an expert with a degree in your subject. And secondly, you can rely on our editing services. Our editors will revise your papers, checking whether or not they comply with high standards of academic writing. In addition, editing entails adjusting content if it’s off the topic, adding more sources, refining the language style, and making sure the referencing style is followed.
  3. Confidentiality / 100% No Disclosure

    We make sure that clients’ personal data remains confidential and is not exploited for any purposes beyond those related to our services. We only ask you to provide us with the information that is required to produce the paper according to your writing needs. Please note that the payment info is protected as well. Feel free to refer to the support team for more information about our payment methods. The fact that you used our service is kept secret due to the advanced security standards. So, you can be sure that no one will find out that you got a paper from our writing service.
  4. Money Back Guarantee

    If the writer doesn’t address all the questions on your assignment brief or the delivered paper appears to be off the topic, you can ask for a refund. Or, if it is applicable, you can opt in for free revision within 14-30 days, depending on your paper’s length. The revision or refund request should be sent within 14 days after delivery. The customer gets 100% money-back in case they haven't downloaded the paper. All approved refunds will be returned to the customer’s credit card or Bonus Balance in a form of store credit. Take a note that we will send an extra compensation if the customers goes with a store credit.
  5. 24/7 Customer Support

    We have a support team working 24/7 ready to give your issue concerning the order their immediate attention. If you have any questions about the ordering process, communication with the writer, payment options, feel free to join live chat. Be sure to get a fast response. They can also give you the exact price quote, taking into account the timing, desired academic level of the paper, and the number of pages.

Excellent Quality
Zero Plagiarism
Expert Writers
Did you find apk for android? You can find new Free Android Games and apps.

Instant Quote

Subject:
Type:
Pages/Words:
Single spaced
approx 275 words per page
Urgency (Less urgent, less costly):
Level:
Currency:
Total Cost: NaN

Get 10% Off on your 1st order!