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4 years ago

A ray of light bends upon entering a new medium. What is this phenomenon called?

Physics

2 answers:

hoa [83]4 years ago

4 0

Ii believe it's a refraction

artcher [175]4 years ago

4 0

Answer:

Refraction

Explanation:

Refraction is a phenomenon which results when a ray of light enters from one medium to another medium. The speed of light in a medium slows down. It depends upon the optical density of the medium which is given by refractive index.

When a ray of light enters from rarer medium to denser medium, it bends towards the normal.

When a ray of light enters from denser medium to rarer medium, it bends away from the normal.

The laws of refraction are:

The incident ray, the refracted ray and the normal all lie in the same plane.

$\frac{sin i}{sin r}=\frac{n_2}{n_1}$

This is Snell's law. i is the angle of incidence, r is the angle of refraction, n₁ is the refractive index of medium 1 and n₂ is the refractive index of the medium 2.

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An ideal spring hangs from the ceiling. A 1.25-kg mass is hung from the spring. After all vibrations have died away, the spring

ch4aika [34]

The kinetic energy of the mass at the instant it passes back through its equilibrium position is about 1.20 J

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<h3>Further explanation</h3>

Let's recall Elastic Potential Energy formula as follows:

$\boxed{E_p = \frac{1}{2}k x^2}$

where:

Ep = elastic potential energy ( J )

k = spring constant ( N/m )

x = spring extension ( compression ) ( m )

Let us now tackle the problem!

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Given:

mass of object = m = 1.25 kg

initial extension = x = 0.0275 m

final extension = x' = 0.0735 - 0.0275 = 0.0460 m

Asked:

kinetic energy = Ek = ?

Solution:

Firstly , we will calculate the spring constant by using Hooke's Law as follows:

$F = k x$

$mg = k x$

$k = mg \div x$

$k = 1.25(9.8) \div 0.0275$

$k = 445 \frac{5}{11} \texttt{ N/m}$

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Next , we will use Conservation of Energy formula to solve this problem:

$Ep_1 + Ek_1 = Ep_2 + Ek_2$

$\frac{1}{2}k (x')^2 + mgh + 0 = \frac{1}{2}k x^2 + Ek$

$Ek = \frac{1}{2}k (x')^2 + mgh - \frac{1}{2}k x^2$

$Ek = \frac{1}{2}k ( (x')^2 - x^2 ) + mgh$

$Ek = \frac{1}{2}(445 \frac{5}{11}) ( 0.0460^2 - 0.0275^2 ) + 1.25(9.8)(0.0735)$

$\boxed {Ek \approx 1.20 \texttt{ J}}$

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<h3>Learn more</h3>

Kinetic Energy : brainly.com/question/692781

Acceleration : brainly.com/question/2283922

The Speed of Car : brainly.com/question/568302
Young Modulus : brainly.com/question/9202964
Simple Harmonic Motion : brainly.com/question/12069840

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<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Elasticity

8 0

3 years ago

Read 2 more answers

1. What is the momentum of a 0.15 kg arrow that is traveling at 120 m/s?

Korvikt [17]

For this case we have that by definition, the momentum equation is given by:

$p = m * v$

Where:

m: It is the mass

v: It is the velocity

According to the data we have:

$m = 0.15 \ kg\\v = 120 \frac {m} {s}$

Substituting:

$p = 0.15 * 120\\p = 18 \frac {kg * m} {s}$

On the other hand, if we clear the variable "mass" we have:

$m = \frac {p} {v}$

According to the data we have:

$p = 250 \frac {kg * m} {s}\\v = 5 \frac {m} {s}\\m = \frac {250} {5}\\m = 50 \ kg$

Thus, the mass is $50 \ kg$

Answer:

$p = 18 \frac {kg * m} {s}\\m = 50 \ kg$

3 0

3 years ago

A&P I need helppp plspls

katrin2010 [14]

Answer:

Explanation:

6 0

3 years ago

I will mark you Brainlient

Elina [12.6K]

Answer:

d.solid to liquid cause they were once on a fixed and started to slide.liquid particles slide along a container so it is a solid to liquid

6 0

3 years ago

Read 2 more answers

Which term refers to the use of strength to hold the body's position?

Andrew [12]

Answer:

Th e correct answer is B. Balance

Explanation:

Balance is an ability of a body to maintain the line of gravity with negligible postural sway. Sway is the horizontal movement of the center of gravity of a body if a body is standing still.

If you want to stay for a long period of time in one position without movement, then you need balance. So the term refers to the use of strength to hold the body's position is balance.

Agility refers to the flexibility of the body or jumping

Power means Strength in general

Speed is the ability that how can a person run fast.

6 0

3 years ago