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Law Incorporation [45]
4 years ago
11

Why does a straw look broken viewed in a glass of water?

Physics
1 answer:
Nat2105 [25]4 years ago
7 0

Answer:

This is due to refraction of light

Explanation:

When a straw is placed in a glass it appears to be broken as a result of refraction of light on the air-water interface.

Since, the refractive index of water is more than that of glass.

Also, water is denser than air, which means light travels slower in water than in air.

Most importantly, When light travels from rarer to denser medium it bents towards the normal and deviates from its original path which explains the broken view of straw in a glass of water.  

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Four distinguishable particles move freely in a room divided into octants (there are no actual partitions). Let the basic states
mafiozo [28]

Answer:

Explanation:

Since the door that leads to the room is opened, this gives room for particles to move into the next identical room and divided into octants. Now the amount of space that can be occupied becomes double, the number of basic states has increased by 404916

8 0
3 years ago
PLEASE ASAP<br><br><br> -4m<br> -3M<br> -2m<br> -1m<br> 0m<br> 1m<br> 2m<br> 3M<br> 4m
kifflom [539]

Answer:

right at negative 1 probably

Explanation:

3 0
3 years ago
How many justified by Bohr model?
Dominik [7]

X-ray formation

Energy difference in the first ionization of the same group of elements

Differential linear emission spectra of different elements

Explanation:

The formation of x-ray, energy difference in the first ionization of the same group of elements and differential linear emission spectra of different elements can be justified by the Bohr model of the atom.

  • According to Neil Bohr, in an atom, the extranuclear part consists of electrons in specific spherical orbits around the nucleus.
  • Bohr's model explained the discrete lines in atomic spectrum of different elements.
  • Due to excitation of electrons, some rays are given off. Some of these are energetic like x-rays.
  • The energy difference between the first ionization of the same group of elements is a proof that electrons are in specific spherical orbits.
  • The higher the energy the level, the ease at which electrons can be removed and the lower the ionization energy.

Learn more:

Bohr model of the atom brainly.com/question/4986277

#learnwithBrainly

3 0
4 years ago
A wave has a wavelength of 15 mm and a frequency of 3 hertz. What is its speed?
andre [41]
The answer to this problem is 0.045
4 0
3 years ago
A roller coaster is towed up an incline at a steady speed of 0.4800 m/s by a chain parallel to the surface of the incline. The s
maria [59]

Answer:

The force exerted by the chain is 117N

Explanation:

We have to draw a free body diagram to visualize this problem better.

according to Newton's second law:

\sum F=m*a

but the roller coaster is having a constant speed so:

\sum F=0

F_c-F_{mg}=0

F_c=F_{mg}

F_{mg}=m*g*sin(\theta)\\\\\theta=arctg(\frac{2.9m}{100m})=1.7^o\\\\F_{mg}=402.3kg*9.81m/s*sin(1.7^o)\\F_{mg}=117N

So:

F_c=117N

6 0
3 years ago
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