Ask question

Ask question

All categories

3 years ago

7

NEED AWNSER NOW! WILL MARK BRAINLY! Which term is defined as the ratio of the speed of light in a vacuum to the speed of light i

n the material it is passing through?
index of reflection

index of refraction

angle of reflection

angle of incidence

2 answers:

schepotkina [342]3 years ago

8 0

Answer:

Index of refraction.

Vanyuwa [196]3 years ago

7 0

Answer:

index of refraction

Explanation:

I just took the k12 quiz.

You might be interested in

Determine the magnitude of the force F1F1 component acting along the uu axis. Express your answer to three significant figures a

dybincka [34]

The first image below shows force F1 and the axes.

Answer: $(F_{1})_{u}=$ 3.62 kN

Explanation: The second figure below express the parallelogram method to calculate the u component of force F1.

The <u>Parallelogram</u> <u>Method</u> is a method to determine resultant force and is applied as described in the question above.

With the three components, $F_{1},(F_{1})_{u}$ and $(F_{1})_{v}$ and angles, it can be used the <u>Law</u> <u>of</u> <u>Sines</u>, which states:

$\frac{a}{sin\alpha} =\frac{b}{sin\beta} =\frac{c}{sin\theta}$

i.e., there is a relation of proportionality between an angle and its opposite side.

For the triangle below:

$\frac{u}{sin30} =\frac{F_{1}}{sin105}$

$u=F_{1}\frac{sin(30)}{sin(105)}$

$u=7\frac{0.5}{0.966}$

u = 3.62

The magnitude of the component acting along the u-axis is 3.62kN.

5 0

3 years ago

A person walks 5 meters north, which is vector 1. Then he walks 4 meters east, which is vector 2. The displacement vector is vec

Rashid [163]

Explanation:

Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.

7 0

3 years ago

When milk goes sour, what type of change has happened?

zzz [600]

B) Chemical change only

7 0

3 years ago

Read 2 more answers

Atwood machine. A 20kg box and a 30kg crate are attached to the two ends of a massless string that passes over a massless fricti

Verdich [7]

Answer with Explanation:

We are given that

$m_1=20 kg$

$m_2=30 kg$

We have to find the acceleration of the system and the tension in the string.

$30g-T=30a$ ...(1)

$T-20g=20a$

$T=20a+20g$ ...(2)

Using equation (2) in equation (1)

$30g-(20a+20g)=30a$

$30g-20a-20g=30a$

$10g=30a+20a=50a$

$a=\frac{10g}{50}=\frac{10\times 9.8}{50}=1.96 m/s^2$

Where $g=9.8m/s^2$

Using the value of a in equation (2)

$T=20(a+g)=20(1.96+9.8)=235.2 N$

5 0

3 years ago

A rocket accelerates at a rate of 16.4m/s^2 for a distance of 50m. What is the speed at the

NARA [144]

Answer:

40.5 m/s

Explanation:

Given:

v₀ = 0 m/s

a = 16.4 m/s²

Δx = 50 m

Find: v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (16.4 m/s²) (50 m)

v = 40.5 m/s

4 0

3 years ago