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Sedaia [141]
3 years ago
15

a light ray traveling in air enters a second medium and its speed slows to 1.71 × 10^8 meters per second. what is the absolute i

ndex of refraction of the second medium? (1) 1.00 (3) 1.75 (2) 0.570 (4) 1.94
Physics
2 answers:
givi [52]3 years ago
8 0
The absolute refractive index is equal to the speed of light of the wave in air divided by the speed of light in the second medium. This means that it is equal to 3 x10^8 / 1.71 x10^8. This means the answer is 1.75
Dmitriy789 [7]3 years ago
8 0
Absolute Index of Refraction 

                                               =  Velocity of Light in air / Velocity of light in medium

                                               =   3 * 10⁸  m/s   / 1.71 * 10⁸ m/s

                                               = 1.75

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Which of the following is not affect by muscles a blood temperature b digestion c hair growth d speech
Murrr4er [49]

Answer:

c

Explanation:

i would think c would be correct because

blood temperature IS affected by muscles

digestion IS affected by muscles

speech IS affected by muscles

so therefore <em>hair growth</em> IS NOT affected by muscles

<h2><u><em>Please mark Brainliest</em></u></h2>
3 0
3 years ago
True or false cells of humans and plants are same.​
timama [110]
False, we lack cell walls whereas they have cell walls.
4 0
2 years ago
a cyclist applies a constant forward force of 20 N to maintain a velocity 2.5 m/s. how much power does the cyclist deliver?
forsale [732]

The power exerted by the cyclist is determined as 50 W.

<h3>Average power exerted by the cyclist</h3>

The power exerted by the cyclist is calculated as follows;

P = FV

where;

  • F is the applied force
  • V is velocity

P = 20 x 2.5

P = 50 W

Thus, the power exerted by the cyclist is determined as 50 W.

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4 0
2 years ago
A radioactive nuclide of atomic number emits an electron, then the daughter nuclide emits a gamma ray. What is the atomic number
Galina-37 [17]

Answer:

correct answer is b    Z --->Z+1

Explanation:

In the processes of radioactive decay there are three basic processes the emission of alpha particles and the emission of beta rays and the emission of ayos range

The emission of a beta ray implies the transformation of a neutral into a proton, which implies the increase of the atomic number in a unit

          Z   ---->  Z +1

the atomic mass does not change since the mass of the two particles is practically the same, to balance the reaction antineutrino must also be emitted

The daughter particle is in an execrated state and passes to its base state with the emission of a gamma ray that does not change its atomic number or its atomic mass.

Consequently, from the above the correct answer is b

3 0
3 years ago
Which one of the following describes the motion of the person between points r and s​
tatyana61 [14]

Answer:

IDRK

Explanation:

So yeah that is that

3 0
3 years ago
Read 2 more answers
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