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svp [43]
3 years ago
15

On the Celsius scale, at what temperature does water boil?

Physics
1 answer:
Anuta_ua [19.1K]3 years ago
6 0
The answer is 100 my nilla. 
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What is the name of the spacecraft that has travels the farthest away from earth
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NASA Voyager 1 space craft
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2 years ago
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How is the direction of light changed when it travels from an optically denser medium to an optically rarer medium????? please a
ANTONII [103]

Answer:

The light bends away from the normal

Explanation:

We can solve the problem by using Snell's law:

n_1 sin \theta_1 = n_2 sin \theta_2

where:

n_1 is the index of refraction of the first medium

n_2 is the index of refraction of the second medium

\theta_1 is the angle of incidence (angle between the incoming ray and the normal to the interface)

\theta_2 is the angle of refraction (angle between the outcoming ray and the normal to the interface)

We can rearrange the equation as

sin \theta_2 = \frac{n_1}{n_2}sin \theta_1

In this problem, light travels from an optically denser medium to an optically rarer medium, so

n_1 > n_2

Therefore, the term \frac{n_1}{n_2} is greater than 1, so

sin \theta_2 > sin \theta_1\\\rightarrow \theta_2 > \theta_1

which means that the angle of refraction is greater than the angle of incidence, and so the light will bend away from the normal.

4 0
3 years ago
A brick is dropped with zero initial speed from the roof of a building and strikes the ground in 1.90 s. How tall is the buildin
irinina [24]

Answer:

17.69 m

Explanation:

The time it takes the brick to strike the ground is 1.90 seconds.

We can apply one of Newton's equation of linear motion to find the height of the building:

s = ut + 0.5gt^2

where s = distance (in this case height)

u = initial velocity = 0 m/s

t = time = 1.90 s

g = acceleration due to gravity = 9.8 m/s^2

Therefore:

s = (0 * 1.9) + (0.5 * 9.8 * 1.9 * 1.9)

s = 0 + 17.68

s = 17.69 m

The height of the building is 17.69 m.

6 0
3 years ago
Given the following lens combination:
natulia [17]

Given:

Lens.........diameter ...fl#

eyepiece...2cm............5

objective...40cm........15

focal length of eyepiece = 2*5 = 10cm

focal length of objective = 40*15 = 600cm

magnification = FL obj / FL eyp = 600/10 = 60x


7 0
3 years ago
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Why are paperclips attracted to magnets? Group of answer choices They contain silver They contain aluminum They contain tin They
riadik2000 [5.3K]

Answer:

They contain iron.

Explanation:

Iron is made of metal and magnets attract to metal Iron.

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