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Aneli [31]
3 years ago
5

Part 1: Make a graph of each set of data. For the first set, plot the start location data on the x-axis and the box's average sl

ide distance on the y-axis. For the second set of data, plot the mass of the marble on the x-axis and the average distance the box slides on the y-axis. Four start locations were chosen for this experiment. Why was the potential energy of the marble different at each location? What happened to the potential energy as the ball rolled down the ramp? Why did the box slide backwards when the marble hit it? What kind of energy did the box have as it was sliding? Where did this energy come from? What is the relationship between the marble's starting position and the distance the box slid? Part 2: All the marbles started at the 40-cm mark in this experiment. Were their potential energies the same? Why or why not? Comparing the marbles, was there any difference in the average amount that the box slid after catching the marble? What is the relationship? Do all of the marbles have the same amount of kinetic energy at the end of the ramp? How can you tell? Write a summary paragraph discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph. According to your data, was your hypothesis for each experiment correct? (Be sure to refer to your data and graphs when answering this question.) Summarize the conclusions that you can draw from this experiment. Use the questions above to guide your ideas. Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems. Give at least one more example from real life where the principles demonstrated in this lab are evident.
Biology
1 answer:
uysha [10]3 years ago
8 0

Answer:

whats the answerrrrrrssss

Explanation:

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1. What is the total magnification of an object if the ocular lens magnification is 20x and the objective lens magnification is
V125BC [204]

1. Answer: 900x

A typical microscope has two lens: ocular lens which located near the eye, and objective lens which located near the object. The image will undergo magnification of both lens. The total magnification of the object would be the product of both lens multiplication, not the sum. The multiplication will be: 20x * 45x= 900x

total mag= ocular * object

total mag= 20x * 45x

total mag= 900x


2.  Answer: 100x

The total magnification of the object would be the product of both lens multiplication. If the total magnification 1000x, that mean it was the product of ocular lens and objective lens. If ocular lens magnification is 10x, objective lens magnification would be:

total mag= ocular * object

1000x= 10x*object

object=1000x/ 10x=

object=100x

3. Answer: 0.2 mm

The area of the microscope that can be viewed by the eye should be the same. But since the magnification is different, the actual area that it represent will be different. Microscope with bigger magnification will have smaller diameter of the field of view(DFV).  Remember that micrometer(μm) is 1/1000 of millimeter(mm). The DFV would be:500 μm/ ( 1000x/400x)= 200μm= 0.2 mm


4. Answer: 750μm

This question is similar to number 3 question. Remember that 1 millimeter(mm) equal to 1000 micrometer(μm) .

The DFV of a 10x objective lens is 3 mm. Then the DFV of 40x lens would be:

DFV2= DFV1/ (mag1/mag2)

DFV2= 3mm/ ( 40x/10x)= 0.75 mm= 750μm

5. Answer: 125μm x 37.5μm

The lens DFV of microscope from question 4 is 750μm, so the width and length of the area would be 750μm.

If 6 organisms could fit across the DFV if they were laid end-to-end, the length would be: 750μm/ 6 organism= 125μm

If 20 organism could fit is stacked side by-side, then the width would be: 750μm/ 20 organism= 37.5μm

6. Answer: 6mm

This question is similar to number 3 and number 4 question. Remember that 1 millimeter(mm) equal to 1000 micrometer(μm).

The DFV of a 100x objective lens is 1.5 mm. Then the DFV of 25x lens would be:

DFV2= DFV1/ (mag1/mag2)

DFV2= 1.5mm/ (100x/25x)= 6 mm


7.Using the 100x objective lens from question 6, you estimate 12 organisms could fit across the DFV if they were laid end-to-end and 30 could fit is stacked side-by-side. What is the length and width of this organism (in microns)?  

Answer: 0.5mm x 0.2mm or 500μm x 200μm

The lens DFV of microscope from question 6 is 6 mm, so the width and length of the area would be 6 mm.

If 12 organisms could fit across the DFV if they were laid end-to-end, the length would be: 6mm/ 12 organism=0.5mm

If 30 organism could fit is stacked side by-side, then the width would be: 6mm/ 30 organism= 0.2mm

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(D) It is caused by rhinovirus.

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In what situation must actors focus on the communicative power of slight facial gestures while ignoring the expressive potential
zimovet [89]

Answer:

The correct answer is - filmed in a close up.

Explanation:

Close up in camera view or in the film making, is a type of the camera shot that involves the facial expression of the actor rather than the expressions that involved the physical expressive potential of the body.

In this shots facial gestures are include the expression and di·a·logue  that express the feelings of the character they play.

Thus, the correct answer is -  filmed in a close up.

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Answer:

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Explanation:

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Tumor-suppresor genes inhibit cell division in the cell-cycle to repair DNA that is damaged or abnormal chromosomes to stop the mutation of such genes which causes pathology in the body.
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