How can you show positive body languages with your mouth

Physics

1 answer:

sergey [27]3 years ago

7 0

By just smiling. It normally makes you look more happy.And if your happy that's positive body languge

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A beam of light passes through a liquid into air. Angle 1, angle of

Ede4ka [16]

Answer: 1.57

Explanation:

This described situation is known as Refraction, a phenomenon in which light bends or changes its direction when passing through a medium with a index of refraction different from the other medium.

In this context, the index of refraction is a number that describes how fast light propagates through a medium or material.

According to Snell’s Law:

$n_{1}sin(\theta_{1})=n_{2}sin(\theta_{2})$ (1)

Where:

$n_{1}$ is the first medium index of refraction (the value we want to know)

$n_{2}=1$ is the second medium index of refraction (air)

$\theta_{1}=23\°$ is the angle of incidence

$\theta_{2}=38\°$ is the angle of refraction

Now, let's find $n_{1}$ from (1):

$n_{1}=n_{2}\frac{sin \theta_{2}}{sin \theta_{1}}$ (2)

Substituting the known values:

$n_{1}=1\frac{sin(38\°)}{sin(23\°)}$

Finally:

$n_{1}=1.57$

3 0

3 years ago

( The Glass Castle)

Nimfa-mama [501]

the answer would be touch and smell

6 0

3 years ago

Friction and air resistance are forces that always:

Softa [21]

2 act in the opposite direction. To an objects motion, tending to slow it down

7 0

3 years ago

Hi :) what’s the difference between conduction in metals & non-metals ? I know it’s the free electron diffusion thingy but I

Andre45 [30]

The difference between metal and non-metal in terms of condition is explained below.

Explanation:

In metals, conduction occurs due to the aggregation of vibrations of molecules and free-electron distribution. While in non-metals, the mechanism for conduction is only atomic or molecular vibrations.
Apart from free electrons, there are phonons in metals as well as non-metals. Non-metals hold a confined amount of thermal conductivity only due to Phonons and Lattice vibrations.
Concerning atomic vibration in a solid thing (non-metals mainly), it is easier to know if one receives the fact that atoms are almost floating adjacent to one another depending on the covalent bonds between them.
When a metal is heated the electrons quickly respond to the heat and transfer it to the nearby atom or solid touching it. As non-metals don't possess free electrons, the heat transfer happens due to phonons (the excited state of the lattice structure vibrating uniformly).
In metals, this rarely plays a role as the electrons transfer most of the heat efficiently.