A Metal Pot Full of Water at Room Temperature is Put on the Burner of a Stovetop - Engineering Assignment Help

Assignment Task:

Task:

Test information:
The test is out of 50 marks – 10 for Part A and 40 for Part B.
You have 2.5 hours (150 minutes) of working time for this test, including perusal time, writing time, proof-reading and citing your sources (where applicable).
This test has two parts. The instructions for each are at the start of each part.

Test responses

• For each explanation mark, you need to provide one key point of logic or fact that addresses what was asked. (That means a 5 mark question requires 5 key points.)
• For all questions, enter your response in the space provided. The box will expand if you need more space. (The default box size is not an indicator of the size of the expected response.)
• You are NOT required to define each term that you use. You may use a definition as part of your logic if that supports your response to the question.
• Your response to each question is scored based on its correctness, completeness and relevance.
• Adding your name and student number to the footnote:
• Double-click on the footer to edit it. Click on the blue text to enter your name and student number. Close the Header/Footer.
• Part A: 10 marks
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• Instructions for Part A:
• For each of the next four questions, you must decide whether the statement shown in italics is true or false and provide an explanation.
• Marking scheme for each question:
• 1/2 mark for correctly selecting true or false
• 2 marks for your explanation.
• Part A Question 1:
• A vehicle has travelled a distance of 30 meters in 10 sec. Therefore the vehicle has an acceleration of 0.3 ms-2 during that time.
• Question 1’s statement in italics is: true?false? (Click on the box to select or unselect it.)
• Provide your explanation for your choice using the box below.
• Click or tap here to enter text.
• Part A Question 2:
• An object is moving at a steady velocity then experiences a net force for three seconds. The object has experienced a change in inertia.
• Question 2’s statement in italics is: true?false? (Click on the box to select or unselect it.)
• Provide your explanation for your choice using the box below.
• Click or tap here to enter text.
•  
• Part A Question 3:
• A coil of wire carrying a current will have a magnetic field only there is a ferromagnetic core present.
• Question 2’s statement in italics is: true?false? (Click on the box to select or unselect it.)
• Provide your explanation for your choice using the box below.
• Click or tap here to enter text.
• Part A Question 4:
• An electrical device is plugged into a powerpoint. A malfunction in the device causes increased heating in the device, raising its ohmic resistance. This will cause more current to flow through the device.
• Question 2’s statement in italics is: true?false? (Click on the box to select or unselect it.)
• Provide your explanation for your choice using the box below.
• Click or tap here to enter text.
• End of Part A
• Part B: 40 marks
• Instructions for Part B:
• The marks for each question are indicated.
• In all cases, you are expected to provide an explanation of your answer.
• For each mark in this section, you need to provide one key point of logic or fact that addresses what was asked.  (The more marks the question is worth, the more key points you will need to provide.)
• Your responses will be scored based on correctness, completeness and relevance to what was asked.
• You are NOT required to define each term that you use. You may use a definition as part of your logic if that supports your response to the question.
• Enter your answer to each question in the space provided.
• Remember to provide in-text citations for any material from external sources (other than paraphrasing from the lectures and text) and complete the reference list at the end of the document if you have used external sources.
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• Part B Question 1: (9 marks)
• Two atoms, carbon (Z = 6) and calcium (Z = 13) are located at the surface of an object. White light is beamed onto the object’s surface. Some light photons are then absorbed in each atom. Why would different photon energies be absorbed in carbon compared to those absorbed in calcium? Explain your answer. (3 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
• If a person wants to know whether radiowaves will easily penetrate through a specific material, would it be helpful to know the electron binding energies of that material? Explain your answer. (2 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
• Explain why shining white light on most opaque objects results in an increase in temperature of that object. (4 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
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• Part B Question 2 (6 marks)
• A patient comes from the Radiation Oncology clinic to you for an imaging appointment. He has pellets of a beta-emitter radionuclide permanently implanted in his tumour. Why is it considered safe for you to stand next to him while you do your imaging examination? Explain your answer. (2 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
• A thousand projectile electrons, all with the same initial kinetic energy, are shot at a block of gold (Z = 79). This causes the production of x-ray photons in the gold. Explain why the resultant x-ray photons would be of a wide range of energies rather than all photons being of the same energy. (4 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
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• Part B Question 3 (7 marks)
• A beam of parallel light rays travels from air into a flat pane of glass and then back out into air. Will the beam experience the same degree of reflection at both interfaces? Explain your answer. (2.5 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
• You are told that the alarm bell A is 10 dB louder than alarm bell B. Both have the same frequency. Compare the emitted soundwaves from the two bells in terms of their velocity, wavelength and amplitude, and explain your answer for each. (Note: Compare in relative terms only – equal to, greater than, less than.) (3 x 1.5 marks = 4.5 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
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• Part B Question 4 (7 marks)
• Your housemate is toasting bread. While the toaster is on, he sticks a fork in to adjust the bread position. Will he definitely get an electric shock? Explain your answer. (3 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
• Both the neutral wire and the ground wire of a standard building circuit are connected to the earth (ground). Explain the difference between the two wires in terms of function. (2 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
• You have read that ‘a battery is a source of EMF’. What is EMF and how does the battery supply it? (2 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
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• Part B Question 5 (5 marks)
• Questions a) and b) relate to this diagram and information:
• A cylindrical container with no lid has two holes punched in it on the side – one hole is near the bottom and the other is near the top as shown below. When the container is filled with a liquid, it exits the two holes as shown in the diagram below.
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• Why does the liquid exiting the holes not fall straight down as soon as it is out of the holes but instead flows horizontally first and then gradually turns downwards? (2 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
• Why does the liquid from the bottom hole travel horizontally for a longer distance than the liquid from the top hole does? (3 marks)
• Enter your response to this question in the box below.
• Click or tap here to enter text.
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• Part B Question 6 (6 marks)
• A metal pot full of water at room temperature is put on the burner of a stovetop. The stove heats the bottom of the pot. Explain how the water at the top of the pot become hot enough to boil. (3 marks)

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