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3 years ago

Which phenomenon causes an object to appear bent from above the surface of one medium to below the surface of another medium?

Physics

2 answers:

alexdok [17]3 years ago

8 0

Answer:

Refraction of light.

Explanation:

The phenomenon that causes an object to appear bent from above the surface of one medium to below the surface of another medium is called the refraction of light.

There are two laws for the refraction :

The ratio of sine of angle of incidence to the sine of angle of refraction is constant i.e.
$\dfrac{sin\ i}{sin\ r}=constant$
The incident ray, the refracted ray, the normal all lie in the same plane.

masha68 [24]3 years ago

3 0

The phenomenon that causes by an object to appear bent from above the surface of one medium to below the surface of another medium is : Refraction

For example, try to dip a pencil in a glass of water.
You will observe that the pencil will give out an impression as if it's been bent, but it's actually just an illusion caused by the light refraction.

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Planet that has an orbit that intersects the orbit of pluto

Scilla [17]

<h2>Answer: Neptune </h2>

The dwarf planet Pluton, <u>has the most eccentric orbit</u> (more elliptical and elongated) of all the planets, and as a consequence its orbit is "intersected" by the orbit of Neptune.

However, <u>despite this intersection, there is no collision risk between these two bodies</u>, since the orbit of Pluto is located in an orbital plane different from that of the other planets and therefore different from that of Neptune, its nearest neighbor. In addition, the orbit of Pluton is inclined $17\°$ on the the ecliptic plane (plane where the other planets move around the Sun).

8 0

3 years ago

Static electric fields are caused by charged particles. What characterizes a positively charged particle?

sergeinik [125]

Static electric fields are caused by charged particles when the atoms which compose the particle will have the same number of electrons as protons.

Each point in space has an electric field associated with it when the charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the strength and direction of the electric field.

Both the electromagnetic wave produced by a radio broadcast monopole antenna and the field created in the dielectric of a parallel-plate capacitor are examples of electric fields (which create a time-varying field). Every place in space where a charge, regardless of its shape, is present is said to have an electric field, which is an electric attribute. The electric field's equation is given as E = F / Q.

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8 0

2 years ago

Explain how motion and energy are related to roller coasters, please be specific!

Fittoniya [83]

Because when an object is in motion it has kinetic energy

4 0

3 years ago

How does the height the ball is released affect the amount of potential energy

aleksley [76]

The potential energy is directly proportional to the height.
If you double the height you double the potential energy.

5 0

3 years ago

The angular momentum of a flywheel having a rotational inertia of 0.200 kg · m2 about its central axis decreases from 3.80 to 0.

Bingel [31]

Answer:

14.3065 rad

-36.777 J

-28.29 W

Explanation:

$L_f$ = Final angular momentum = 0.6 kgm²/s

$L_i$ = Initial angular momentum = 3 kgm²/s

I = Moment of inertia = 0.2 kgm²

Torque is given by

$\tau=\dfrac{L_f-L_i}{t}\\\Rightarrow \tau=\frac{0.6-3.8}{1.3}\\\Rightarrow \tau=-2.46\ Nm$

$\theta=\omega_it+\dfrac{1}{2}\alpha t^2$

Initial angular speed is given by

$\omega_i=\dfrac{L_i}{I}$

Angular acceleration is given by

$\alpha=\dfrac{\tau}{I}$

$\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\Rightarrow \theta=\dfrac{L_it+\dfrac{1}{2}\tau t^2}{I}\\\Rightarrow \theta=\dfrac{3.8\times 1.3+\dfrac{1}{2}\times -2.46\times 1.3^2}{0.2}\\\Rightarrow \theta=14.3065\ rad$

The angle is 14.3065 rad

Work done is given by

$W=\tau \theta\\\Rightarrow W=-2.46\times 14.95\\\Rightarrow W=-36.777\ J$

The work done on the wheel is -36.777 J

Power is given by

$P=\dfrac{W}{t}\\\Rightarrow P=\dfrac{-36.777}{1.3}\\\Rightarrow P=-28.29\ W$

The power is -28.29 W

6 0

3 years ago