## [Solved] Vectors

Using components determine the sum of a  +  b   if  a  = 3 m [N 30° W] and  b  = 2 m [N 10° E]. Note: Since the use of components is a useful strategy for word problems later in this course, your solution must make use of vector components.

## [Solved] The Efficiency Number

Calculate the efficiency number and write up the results report. Include photos, explanation of what you saw, process steps, discussion of the results, and any other information you feel will explain your choice of beam design and your reaction to its performance.

## [Solved] How Machines Operate

Write a two-page paper double space that answers the following questions. Any graphs or data that are included does not count towards the required two pages. 12pt font should be used with a one-inch maximum margin. This lab is about CAT/PET Scans. Describe the physics as to how each machine operates! How are they different? How must one prepare for a scan? Why is the procedure for each including the patient’s preparation? What do the scans detect? What are they not used for? Can both scans be taken on all parts of the body? Is the image 2D or 3D? Color or black and white? What is the typical cost for each scan? If you had one, please share your experience.

## [Solved] Nuclear Energy

1. Using Equation 4.4, show that d represents the mean distance neutrons travel before being absorbed.25. If you were located 100 km from a 1 GW nuclear power plant, what would the neutrino flux be at your location? Assume that a 1 GW nuclear power plant releases 1021 neutrinos per second and you present a 1 m2 surface to the neutrino flu

## [CUSTOM SOLUTION] Moving Balloons

1. Moving balloons:In the picture below, the balloons on the left and middle are held in place. The right balloon is free to move.Is it possible to add positives or negatives on the free balloon that would make it moveto the left ( ß )? ­­­­­___________If so, then draw positives or negatives on the balloon that would make it move, and explain why you think it would work? ­­­­­­­­­

## [CUSTOM SOLUTION] Microstructure Changes

The phase diagram for the Al – Si system (the basis of aluminium casting alloys) is shown in Figure 1. Explain what is happening when the alloy Al  30 wt % of Si is cooled from 900 ? to room temperature. You need to consider phasetransformation, microstructure changes, temperatures, and composition.(6 marks)Figure 1: Phase Diagram of Al – Si binary system(ii) You have been asked to calculate the critical nucleus radius, r* and the activation free energy ?????? for the solidification of pure nickel if nucleation is homogenous. The latent heat of fusion and surface energy of nickel are given as -2.53 x 109 J/m3 and 0.250 J/m2 respectively. The supercooling curve value for nickel is 319 ?. The melting temperature of nickel is 1455 ?.(4 marks)

## [CUSTOM SOLUTION] Photocatalysis Of TiO2 Material

Please help me write a report focusing on “photocatalysis of TiO2 material”. Most of the papers regarding this topic can be found online.Requirement:- 8 to 10 pages long- Does not have to be strictly plagiarism free (you can pick certain ideas from certain paper and lightly paraphrase their idea. You can just copy paste their images if they have any)

## [CUSTOM SOLUTION] High Absorption Effect

Question 1: In the “Introduction” section (second paragraph), they claim that strong linear absorption in the OPA technique makes this only usable for 2D scanning and the absence of linear absorption in TPA technique and local non-linear absorption makes this technique applicable for 3D scanning. Please explain and elaborate this idea with graph and/or equation.Question 2: In the “Working principle of LOPA microscopy” section, they wrote: “The intensity increases nonlinearly and reaches a maximum value at the focal plane ” (line 2 and 3). Please explain and elaborate this idea with drawing and/or equation.Question 3: In the “Working principle of LOPA microscopy” section, from line 1 to 6 at page 4, they imply that the high absorption of OPA decreases the intensity of light and this is a disadvantage of OPA technique and it hinders the the OPA technique from achieving what the TPA technique can do (being able to give off light with high intensity and get photo induced effect). However, at line 8 to 11 they claimed that the strong linear absorption of OPA technique can also get photo induced effect ? Can you elaborate on this idea ? i think im misunderstanding somethingQuestion 4: In the “Working principle of LOPA microscopy” section, paragraph 2 (from line 12 page 4). They are explaining on how they get low absorption effect with OPA. I don’t understand this at all. Can you explain this with drawing and/or equation ? thank you.Question 5: In the “Working principle of LOPA microscopy” section, paragraph 2, line 7 to 9 they wrote ” Although the absorption is ultra weak, the effective photo induced effect in focusing region is therefore comparable to that obtained by a laser beam with a high absorption effect”. I do not understand this point at all because i thought the whole point of this is making OPA having low absorption like the TPA technique so this OPA technique can do what the TPA technique can too. Why are they speaking of the “high absorption effect” as an advantage now ? What am i misunderstanding