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tekilochka [14]
3 years ago
6

How to do this question

Physics
1 answer:
Yuki888 [10]3 years ago
7 0

Answer:

64°

Explanation:

The triangle is an isosceles triangles (both legs are equal to the radius of the circle), so that means the base angles are the same.

Angles of a triangle add up to 180°, so:

128 + 2x = 180

2x = 52

x = 26

∠1 is complementary to the base angle, so:

∠1 = 90 − 26

∠1 = 64

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Earth's gravity acts upon objects with a steady force of __________. A. 8. 9 meters per second B. 9. 8 meters per minute C. 8. 9
Mila [183]

Answer:

9.8 meters per second squared

Explanation:

8 0
2 years ago
Speakers A and B are vibrating in phase. They are directly facing each other, are 8.0 m apart, and are each playing a 75.0-Hz to
NeX [460]

Answer:

4 m, 1.71 m and 6.29 m

Explanation:

Let L = 8 m be the distance between the two speakers. Let x be the distance from speaker A of constructive interference. The distance to speaker B from the point of constructive interference is thus x₁ = L - x.

There is constructive interference when the distance x₁ - x = nλ where n = is an integer and λ = wavelength L - x  

x₁ - x = nλ

L - x - x = nλ

L - 2x = nλ

x = (L - nλ)/2 = (L - nv/f)/2. where v = speed of wave = 343 m/s and f = frequency = 75 Hz

The distance from A where constructive interference would occur starts from when

n = 0

x₂ = (L - nv/f)/2 = (8 - 0 × 343/75)/2 = (8 - 0)/2 = 8/2 = 4 m

n = 1

x₃ = (L - nv/f)/2 = (8 - 1 × 343/75)/2 = (8 - 4.57)/2 = 3.43/2 = 1.71 m

when n = 2

x₄ = (L - nv/f)/2 = (8 - 2 × 343/75)/2 = (8 - 9.14)/2 = -1.15/2 = -0.57 m

So the value at n = 2 is not included.

The third point occurs at x₅ = L - x₃ where x₃ = 1.71 m is the distance away from point B where constructive interference also occurs. (since it is symmetrical about the point x₂ = 4 m

x₅ = L - x₃ = 8 - 1.71 = 6.29 m

 

8 0
3 years ago
Read 2 more answers
NO LINKS!!!!!! Help its urgent, PLEASE HELP!!!!!!!!!!!!!!!!
Likurg_2 [28]

Answer:

I think ur answer would be B

Explanation:

srry if wrong

hope this helps

7 0
3 years ago
Hewo thoties can ya'll do me a favor and go friend my bff on here plz and thank u
pickupchik [31]

Answer:

lol sure

Explanation:

3 0
3 years ago
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A bowling ball has a mass of 6 kg. What happens to its momentum when its speed increases from 2m/s to 4 m/s?
Vitek1552 [10]
Here, Initial momentum = mu = 6*2 = 12 Kg m/s
Final momentum = mv = 6*4 = 24 Kg m/s

In short, Your Answer would be Option C

Hope this helps!
6 0
3 years ago
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