A beam of light passes through the air (n = 1. 00) and enters a diamond (n - 2. 42) at an angle of incidence of 40 degrees. Use Snell's Law to find the angle of refraction in the diamondIf the diamond is placed in a tank of water (n - 1. 33) and the beam of light enters the diamond at the same angle of incidence, what would be the new angle of refraction Show all work

Answer:

it would be the same because they are equal

Answer:

B)

Explanation:

The distance from the 2.0 kg mass at which a string should be attached to balance the rod is 0.67 m.

Distance can be defined as the horizontal length between two points.

To calculate the distance at which the string must be attached to balance the rod, we use the formula below.

Formula:

From the question,

Given

Substitute these values into equation 1

Solve for x

Collect like terms

Hence, the distance from the 2.0 kg mass at which a string should be attached to balance the rod is 0.67 m.

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Answer: The equation that relates wavelength and frequency for electromagnetic waves is: λν=c where λ is the wavelength, ν is the frequency and c is the speed of light.

10/0.5=20 meter.

Explanation:

The speed of a wave has a wavelength of 0.5 m/s and a frequency of 2 hz is   0.25 m.

Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.

There are two types of the wave longitudinal wave and transverse wave.

Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave.

Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a Transverse wave.

The relation between velocity, frequency  and wavelength is,

c = λν

Where λ is wavelength, ν is frequency and c is velocity.

Given,

c = 0.5 m/s

ν = 2 hz

λ = ?

Putting all the values in the equation,

0.5 = 2λ

λ = 0.5/2 = 0.25 m

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Answer :- Option D

Explanation:-

Coz electric field inside a conductor is zero that's why we don't get electrocuted.

Hope it helps....

Considering the definition of speed and propagation of sound, sound is a sequence of waves of pressure which propagates through compressible media and depends on the characteristics of the medium in which the propagation occurs.

Sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid.

That is, sound is a longitudinal wave, mechanical (does not travel in a vacuum) and propagates in all directions, so that the wave front is spherical.

Propagation of sound involves energy transport without matter transport, in the form of mechanical waves.

The speed of propagation of a sound wave depends on the characteristics of the medium in which the propagation occurs and not on the characteristics of the wave or the force that generates it. The speed of propagation of sound waves is also known as the speed of sound.

In summary, sound is a sequence of waves of pressure which propagates through compressible media and depends on the characteristics of the medium in which the propagation occurs.

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Answer:

Mercury<Venus<Earth<Mars<Jupiter< Saturn< Uranus<Neptune

Answer: The answer is C

Explanation: I took the test and got it right

Answer:

it would be loud

Explanation:

it would be loud

Answer:

to reduce the pace of accident

Answer:

X: convex Y: Concave

Explanation:

Just got it right

Answer:

[tex]\huge\boxed{\sf Option \ D.}[/tex]

Explanation:

Potential Energy:

Type of Quantity:

Unit:

Types:

[tex]\rule[225]{225}{2}[/tex]

Answer:

Actual mechanical advantage = force out / force in

250 N / 100 N = 2.5     force out is 2.5 X force provided

250 N * 10 m = 2500 Joules         work output

100 N * 50 m = 5000 Joules        work input

Efficiency is 2500 / 5000 = 50 %

Not sure what is meant by VR      

Question :-

Answer :-

Explanation :-

As per the provided information in the given question, we have been given that the Mass of the body is 2 kg . Speed of the body is given [tex] \bf{10 \: {ms}^{ - 1} } [/tex] . And, we have been asked to calculate the Kinetic Energy .

For calculating the Kinetic Energy , we will use the Formula :-

[tex] \bigstar \: \: \boxed{ \sf{ \: Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: {mv}^{2} \: }} \\ [/tex]

Where ,

Therefore , by Substituting the given values in the above Formula :-

[tex] \longmapsto \: \: \sf{ Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: {m \: \times \: v}^{2} } \\ [/tex]

[tex] \longmapsto \: \: \sf{Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: 2 \: \times \: {10}^{2} } \\ [/tex]

[tex] \longmapsto \: \: \sf{Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: 2 \: \times \: 100 } \\ [/tex]

[tex] \longmapsto \: \: \sf{Kinetic \: Energy \: = \: \dfrac{1 \: \times \: 2 \: \times \: 100}{2}} \\ [/tex]

[tex] \longmapsto \: \: {\textbf {\textsf {Kinetic \: Energy \: = \: 100 \: Joule }}} [/tex]

[tex] \underline {\rule {180pt} {4pt}} [/tex]

The kinetic energy of the body with the given value of mass travelling at the given speed is 100 Joules.

Kinetic energy is simply a form of energy a particle or object possesses due to its motion.

It is expressed as;

K = (1/2)mv²

Where m is mass of the object and v is its velocity.

Given the data in the question;

We substitute our given values into the above expression to determine the kinetic energy of the body.

K = (1/2)mv²

K = (1/2) × 2kg × (10ms⁻¹)²

K = 0.5 × 2kg × 100m²s⁻¹
K = 100kgm²s⁻¹

K = 100J

Therefore, the kinetic energy of the body with the given value of mass travelling at the given speed is 100 Joules.

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40000 kg⋅m/s

momentum: mass * velocity

Question :-

Answer :-

[tex] \rule {180pt} {2pt} [/tex]

Given :-

To Find :-

Solution :-

As per the provided information in the given question, we have been given that the Mass of the car is 1000 Kg . Velocity of the car is given 40 m/s . And, we have been asked to calculate the Momentum of the car .

For calculating the Momentum , we will use the Formula :-

Therefore , by Substituting the given values in the above Formula :-

⇒ Momentum = Mass × Velocity

⇒ Momentum = 1000 × 40

⇒ Momentum = 40000

Hence :-

[tex] \underline {\rule {180pt} {4pt}} [/tex]

Answer: C Low energy electromagnetic waves are either reflecting by or transmitted through body tissue.

Explanation:

Answer:

Bağışlayın, bəzi problemlərim olduğu üçün bunu edirəm.

Answer:

The heating curve for glass would be different from the heating curve for water because water has a strange behavior while glass also has a strange behavior but is different because it lacks the repeating crystalline structure of solids like ice, or water. Glass becomes soft and impressionable as temperature increases.

Since glass lacks the repetitive crystalline structure present in solids like ice or water, its strange behavior differs from that of glass when heated. This is because glass has a unique, strange behavior than water. As temperature rises, glass becomes brittle and impressionable.

A difference in temperature causes energy to flow from one body to another, recognized as heat. Energy is transferred, or heat flows, when two substances of different temperatures are brought together. The hotter body goes to the cold.

Typically, though not always, this energy transfer causes the temperature of the region of lower temperature to rise and the temperature of the warmer object to fall. It is possible for a substance to absorb heat without increasing its temperature by migrating from one physical state (or phase) to another, such as melting, sublimation, boiling, or shifting from one solid form to the other.

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The total distance traveled  is mathematically given as

d=4.5km

Question Parameters:

A compact disc has a radius of 6 cm.

the constant angular speed of 5 rev/s

time 40 min

Generally, the equation for the linear speed   is mathematically given as

v=w*r

Therefore

v=10 pi * 6

v=60pi cm/s

In conclusion, the equation of the distance

distance = v*t

d=60pi * 2400

d=452389.342 cm

d=4.5km

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I think by adding more variables to the experiment.

When there is a temperature difference/Gradient, heat flows from a region of high concentration to region of low concentration.

Thermal energy flow from region of higher temperature gradient to region of low temperature gradient till equilibrium is reached.

When the hot metal is places in a cold water bath, there will be a temperature difference and by conduction(water conducts heat) the heat will travel in the water medium and circulate till equilibrium

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If you hold a heavy weight over your head, the work you do is Is converted into potential energy.

Work is said to be done when the applied force displaces an object over a given distance.

Work energy theorem states that, the work done on object is equal to change in mechanical energy of the object.

When an object is raised over a given distance the work done is equal to the potential energy of the object given as;

W = P.E = mgh

Thus, If you hold a heavy weight over your head, the work you do is Is converted into potential energy.

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No.of primary turns/no.of secondary equal to current in primary /current in secondary therefore 200/120=3.50/C.in secondary =2.1A

Answer:

A

Explanation:

half life is the time taken for a radioactive isotopes to dissociate

Answer:

Always on the move

Nothing stays the same

The sun comes and goes

The night you can never escape

Nothing can last for ever

Everything we know rotates

I thought this would be more clever

But it's late and I don't know what else to say

Those were eight lines only

Counting lines makes you lonely

Sixteen is a big number

I feel like I'm going under

It's always daytime somewhere

But it will never be forever

I move in circles

This poem is over

Explanation:

Sorry I thought it would end up better than this

Answer:

(a) parallel circuit

(b) (i) ammeter (ii) current

Hope this helps!

The distance between the two objects is 1.5 cm.

To calculate the distance between the two objects, we use the formula obtained from Columb's law

Columb's law states that the force of attraction or repulsion between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Formula:

Where:

Make r the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The distance between the two objects is 1.5 cm.

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