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QUESTION 3Under an objective lens the field of vision I5 3 mm in diameter. one Salmonella cell measures um long how many Salmoriella cels could fit end-to end pccro...

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QUESTION 3Under an objective lens the field of vision I5 3 mm in diameter. one Salmonella cell measures um long how many Salmoriella cels could fit end-to end pccross the freld? [*] How many yeast cells fit acroos the field? (y]QuEStIoN 4Draw two Images one that shows the pathway of Ilght through the sllde and Into IOOx abjective Iens wlthout und then wlth Immersion oll, Make sure that you draw the oll an the second image: Attach Flle Brouka Local Fl @rowse Contert Collection Browse [email protected]

QUESTION 3 Under an objective lens the field of vision I5 3 mm in diameter. one Salmonella cell measures um long how many Salmoriella cels could fit end-to end pccross the freld? [*] How many yeast cells fit acroos the field? (y] QuEStIoN 4 Draw two Images one that shows the pathway of Ilght through the sllde and Into IOOx abjective Iens wlthout und then wlth Immersion oll, Make sure that you draw the oll an the second image: Attach Flle Brouka Local Fl @rowse Contert Collection Browse Dropbot @JESUION 5 Eaxrbathree advantzges of fixlng a slide:



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A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal length of 9.50 mm. With the length of the barrel set at 29.0 cm, the diameter of a red blood cell’s image subtends an angle of 1.43 mrad with the eye. If the final image distance is 29.0 cm from the eyepiece, what is the actual diameter of the red blood cell? Hint: To solve this question, go back to basics and use the thin-lens equation.

This question has five parts to it. This is the first part. We've been given some information and we're being asked to solve for how big would the cell appear? Uh huh. And so and back in 2000 times helping what it appear. Magnification is the size of the image, divided by the size of the object. So we have been given both the magnification and the size. So what you do is take the total size of image to find that you would take 10,000 times 50 to be 500,005 kilometers heartbeat. What's the number of act? Yeah, And within a mile site no attacked diameter of 3.6 for the radio. One point a volume is for third Pirates fire, third power. So what? You have 1.34 3rd times 3.1 more touch five point game for you. That's what. My name in the system. So when you get a 13.3, how much do you get the volume putting 50 micrometers. Yeah, your appearance with the cell being 50 micrometers, the radius is 25 micrometers 25. Cute, of course, is 15,625 and then times four thirds times pi, you get 63,781 0.25 So then the equation comes to 13.39416 size of one acting volume, times x You don't know how many is gonna be There equals volume of a cell 63.7. I'm sorry. 63,781 0.25 Divide both sides by 13.39416 x which is the number of active? Yes, Part two c Part C's where we have Okay, my country. And here is the final answer for part being 4761 0.87 Yeah, which is a 1.5. We are to assume a spear shape to it. So if the diameter is 1.5 on the radius is 0.75 take the 0.75 cube multiple applied by 3.14 and then also by 1.3. What you get is 1.7 2209375 This is the volume of one mitochondria. Now compare that with the volume of a single cell, which is the typical cell. 63,781 10.25 Do that comparison Onda Setting up your equation 63,781 0.25 equals 1.72 other numbers. Times X. Then you'll take X equals and you'll have 63,000 divided by 1.72 And what we get is 37,037 0.4 as the number of mitochondria if it's within that stuff. Yes, hurt thing is when you have the concentration of consciousness, one million more leaders in the question is asking how many molecules first thing is to understand. The other address number states that for every one bowl you have to explode on two types 10 to 20 1300 molecules. So the big thing is Thio brave Billy Bowl to a comparative mole compared for balls volumes. So what we're gonna do is take the one million mole and understand that this is over. Leaders understand the one million mole and then divide by 1000 million holes for everyone home and then take that number now that it's in bowls and converted into molecules by multiplied by 6.2 times. Attention car. So there is one of a couple of ways you could get a change. These two types Texas, with their power divided 5000 in the 1000 essentially as one times 10 to the third power. So 23 minus 30 20. So it's the same numbers because on the tops exporters here now it's times 10 to the 20th power. Alternatively, you can also write out all of the heroes and all the place that values have. A doctor has never We're not going to do that today. Car eyes relative Thio it essentially Get on this says you got 20 micrometers. I'm sorry. Uh huh. Close thing. This is in concentration. So basically, my God, is that and then you also have for the cellular concentration for the coast being one billion gold for later. So then you make a comparison, and then you're going to see well, how many molecules per Hexham, Kanye's molecules. So the way to do this is to take first of all, the 20 micro mole per leader and, uh, do that for later. In just a minute But the thing is talking about mole aspect. So 20 micro mole times one million mole divided by 1000 Micro moles times one mole This is again mold for later, divided by one million hole. And so, essentially, what you have is 20 divided by a million. And what you end up with his 0.2 or two times 10 to the negative Fifth. This would be in terms of molds and then taking that and converting it to molecules. You're gonna have point again. 00002 types, 6.2 times 10 to 23rd molecules. Since its Afghan dress number is 6.2 times 10 to 23rd molecules wherever one bowl would you do that? You have essentially that. You've got two times 6.2. That's gonna be 12.4. And then you have, uh, the expel its sits there being multiplied, they're gonna add together and negative five plus 23. So the exponent you'll have for 12, 24 times 10. 18. Then you've got to put that back into scientific notation. So will be 1.204 times 10 to the 19 power. So then the next step is comparing the amount of molecules that we found in G, which was the glucose being in the one million mole that you had 6.2 times 30th power number of molecules compared to the hex of hiding molecules. So 6.2 times 10 to 20 power divided by 1.204 times 10 to 19. Power that again. You can do this one of a couple ways. One way. It just simply take 6.2 divided by 1.204 and what you're gonna end up with, Yeah, six divided by 1.2. It's like, uh, 0.5 point because the decimal places it's gonna be a 0.0.5 and then you have the 20th power and then the advisor in the 19th powers Decision Adviser, they're going to subtract the SP and so 0.5 times 10 to the first power because 20 months, 19 1, and it ends up being 10.5 times 10 to the first power or that is able to find the alternative

So you're you're you're looking at a cell under a light microscope but it looks very blurry. How could we improve a resolution? So you put the slide onto the stage, you look down and you see it's blurry. Okay what can you do to try to improve us first of all is make sure the lenses clean, check that objective lens clean up next. It could be out of focus so you may need to focus your object. These are the main reasons for Any lens but we also need to look specifically at the higher magnification 40 times and the 100 times. So at higher magnification we get an additional problem which is that the the refractive indices between the lens and the air. So glass and air are very different. So we get a lot of refraction when the light passes from the glass into the air. And that scatters it. So they're scatters scatters our lights. And to avoid this we use oil. So we have oil emotion of the lens, and this reduces the difference. So, but oil's referee active index is very similar to that for glasses. So we get less scattering of lights and we end up with a much clearer picture.

No. All of the items you're you will be able to see if it needs to be smarter than this, which all of them are. And it needs to be greater than that. So we need to see if these ones are greater. So to compare them again once tried to use to stuck the mob. So in this case, you have 0.0 Cyril sooner, 1 10 And yes, this is quieter. Ah, this one is going to be serial point cereal 15 and assist your point. But then you're comparing it toe So so so one. It is to be greater than this, which in this case, it is greater. So you would be able to see this one, too. The next one you're comparing would be a virus and again evenings to greater then this. So you're but the viruses syrah 0.0, Cyril zero several 17 In this case, this is greater. So you're not going to be well received this because it is a way too small for the microscope school and then on animal cell. But then you need to make sure that it is greater than the scope. So that you can see it. So you have 0.0, Cyril. Cyril one. And then this is the point. So, you know, serial. So now you three end. This is greater than this. When you're going to be received, the animal cell and the last one you're gonna compare is this pistol spangler toe again, This oneness. Then you're comparing it to this until 31 And then everything is the same twist greater than one. So you are able to see it. So the only thing that this microscope can't that you see is the virus.

Okay in this coach and we have to find out the focal length of the concave lens. So the magnification is given is uh classify since the magnification is supposed to, Therefore magnification is greater than one and the lenses mhm. I can't give this is a concave lens and it the object distance is given us five a centimeter. And magnification become minus D. I. Owed off a doughnut. So D. I. We went to minus and when they fly by D nutt. So the image distance become five. Multiply by five. So the image distance is minus 25 minus 25 centimetre. And from the middle formula we can write one out of people to one out of dinner plus one older D. I. So this becomes one out of f even one out of dinner. It is U. n. s. five Plus of one out of minus 25. So this one out of two, one out of 5 -1 of the 25. one out of if become for a hotel 25 and the f. is equal to 25, divide by four. Then we get the focal Landes. He has 6.2 five centimeter.


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