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iogann1982 [59]
3 years ago
15

Index of refraction

Physics
1 answer:
rodikova [14]3 years ago
5 0

Answer:

The relation is n = c/v where c is speed of light in a vacuum....v is the speed of light in the new medium ......n is the refractive index of the material

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Three hunters x,y and z aim at a bird on top of a tree.Their individual probabilities of killing the bird are 3/5,2/3 and 5/6 re
TiliK225 [7]

Answer:

1   3/5*2/3=6/15

2   (3/5*2/3)+(2/3*5/6)+(3/5*5/6)=Ans

3  same as 2 i think

4  3/5+2/3+5/6=ans

5 (1-3/5)*(1-2/3)*(1-5/6)

Explanation

1 means x and y... for such a  we multiply the probabilities

2 means x and y or x and z or y and z9 multiply ands  add ors

3 i think it is same as 2

4 for this you have to negate the probabilities of killing to find that of not killing.   Since it will be x and y and z, you multiply the final probabilities

:)

3 0
3 years ago
Please help me on due today
Bad White [126]

Subject-Matter Achievement Goal

1. My subject-matter achievement goal is:

Answer:  Read 1 full chapter book in 1 week

2. My action steps are:

Answer:  Read an equal amount of chapters every day for a week

3. My time frame is:

Answer:  1 week

4. Assets and Strengths:

Answer:  ability to focus,

5. Motivation:

Answer:  Great interest in the book I chose

6. Obstacles:

Answer:  Might lose page number, forget where I am at in the book, forget to read one day

7. Solutions:

Answer:  Get or make a bookmark, keep a personal reading log, set alarm for a certain time each day

Study/Organizational Skills Goal

8. My study/organizational skills goal is:

Answer: manage my time better

9. My action steps are:

Answer: planning things out to be more organized

10. My time frame is:

Answer: from now to the end of the school year

11. Assets and Strengths:

Answer: a planner so I can pace myself

12. Motivation:

Answer: give breaks and take time to do things I enjoy

13. Obstacles:

Answer: leaving things last minute

14. Solutions:

Answer:  planning to do certain things before a certain day

This can be for any of those goals

Personal Enrichment Goal

15. My personal enrichment goal is:

Answer: Stay healthy

16. My action steps are:

Answer: eat healthier foods

17. My time frame is:

Answer: now to the end of the school year

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Answer: I don't make a big deal out of eating veggies and stuff

19. Motivation:

Answer: treat myself every so often

20. Obstacles:

Answer: Craving junk food

21. Solutions:

Answer: find a way to make healthier foods taste similar to junk food (EX. Put cheese on broccoli)

4 0
3 years ago
Fill in the blank with the correct word below (from the reading_):
grigory [225]

Answer:I think it’s self monitoring sorry if wrong

Explanation:

4 0
3 years ago
550 nm light passes through a diffraction grating with 3000 lines per centimeter. The screen is 115 cm away from the grating. Wh
Sloan [31]

Answer:

69.7 cm

Explanation:

What is the distance (in cm) between the 2nd order bright fringe and the 2nd dark fringe?

For a diffraction grating, dsinθ = mλ where d = grating spacing = 1/(3000 lines per cm) = 1/3000 × 100 m per line = 1/300000 m = 1/3 × 10⁻⁵ m, m = order of fringe and λ = wavelength of light = 550 nm = 550 × 10⁻⁹ m.

Also, tanθ = x/D where x = distance of nth order fringe from central maximum and D = distance of screen from grating = 115 cm = 1.15 m

Now sinθ = d/mλ, Since θ is small, sinθ ≅ tanθ

So, d/mλ = x/D for a second order bright fringe, m = 2.

So, d/2λ = x/D

x = dD/2λ

So, x =

For a dark fringe, we have

d/(m + 1/2)λ = x'/D where x' is the distance of the fringe from the central maximum.

For a second-order dark fringe, m = 2. So,

d/(2 + 1/2)λ = x'/D

d/(5/2)λ = x'/D

2d/5λ = x'/D

x' = 2dD/5λ

So, the distance (in cm) between the 2nd order bright fringe and the 2nd dark fringe is x" = dD/2λ - 2dD/5λ

x" = dD/10λ

Substituting the values of the variables into the equation, we have

x"= 1/3 × 10⁻⁵ m × 1.15 m/(10 × 550 × 10⁻⁹ m)

x" = 1.15/165 × 10² m

x" = 0.00697 × 10² m

x" = 0.697 m

x" = 69.7 cm

6 0
3 years ago
should I tell penny, potato chip and used napkin that I've made new friends and moved on. I don't want to make them sad. :(
MrRa [10]

Answer: ok

Explanation:

7 0
3 years ago
Read 2 more answers
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