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4 years ago

Evidence of wave theory light

1 answer:

7 0

All of these things were seen in formal experiments by the 19th century. But some of them are easy to see in your own home. It's obvious that light can reflect - you just have to look in a mirror. Light bounces off the mirror and goes into your eye so you can see yourself. It's also obvious that light can refract: All you have to do is put a spoon in a large glass of water and watch how the spoon appears to bend.

That happens because the light is bending as it moves between air and water. Both of these things can be seen even more clearly in a laboratory using beams of light or lasers.

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Which

Softa [21]

Explanation:

i think it speed hope it helps

6 0

3 years ago

Read 2 more answers

The sun is 1.5 × 108 km from Earth. The index of refraction for water is 1.349. How much longer would it take light from the sun

tankabanditka [31]

Answer:

175s

Explanation:

time it takes sunlight to reach the earth in vacuum

C=light speed=299792458m/s

X=1.5x10^8km=1.5x10^11m

c=X/t

T1=X/c

T1=1.5X10^11/299792458=500.34s

time it takes sunlight to reach the earth in water:

First we calculate the speed of light in water taking into account the refractive index

Cw=299792458m/s/1.349=222233104.5m/s

T2=1.5x10^11/222233104.5m/s=675s

additional time it would take for the light to reach the earth

ΔT=T2-T1=675-500=175s

4 0

3 years ago

A 70 kg box is slid along the floor by a 400 N force. The coefficient of friction between the box and the floor is 0.50 when the

Anarel [89]

We have to employ Newton's Second Law and Third Law here: force = mass * acceleration, and every force produces an equal and opposite force.

—The forces vertically are EQUAL, so no acceleration is occurring in this direction. This also means that the force of gravity and the normal force must be equal in magnitude.
—The forces horizontally are NOT equal, so there will be acceleration on this box in this direction. The applied force is going to be larger than the friction force, and the friction force opposes the direction of the applied force.

First, we find the weight of this box, which is given by mass * acceleration due to gravity. On Earth, acceleration due to gravity is about 9.8 m/s^2.
So, 70 kg * 9.8 m/s^2 = 686 N. This force points downwards.
The normal force is equal in magnitude to this, so it is also = 686 N, but points upwards.

The force of friction is given by force(friction) = µ * force(normal). In this problem, µ = 0.50. Then, we plug in to get 0.50 * 686 N = 343 N. This is the force of friction that opposes the motion of the box.

And finally, we are given the applied force, which is 400 N.
Now we make a Newton's second law equation.

force(applied) - force(friction) = mass * acceleration

400 N - 343 N = 70 kg * a

a = .8142 m/s^2

I really hope this is the right answer; it's 4 AM for me lol

6 0

3 years ago

Transfer of heat in motions of humid air without temperature differences is exclusively via ____________ heat transfer.

Orlov [11]

<span>Heat transfer is by convection, conduction, or radiation. </span>

8 0

4 years ago

Suppose you wish to fabricate a uniform wire from 1.00 g of copper. If the wire is to have a resistance of R= 0.500ω and all the

Alekssandra [29.7K]

In order to fabricate a uniform wire that has a resistance of R = 0.500Ω from 1.00 g of copper and all the copper is to be used, the Length, L of the copper required is 1.82m.

<h3>What would be the length of the copper wire?</h3>

The length of the wire is obtained as follows:

Length, L = √R*m/e*d

where;

R is resistance and is equal to 0.50 Ω

m is mass of the copper and is equal to 1.00 g or 10⁻³ kg

e, resistivity of Copper = 1.7 x 10⁻⁸ Ω⁻¹m

density of copper, d = 8.92 x 10³ kg/m³

L = √(10⁻³ * 0.50/1.7 x 10⁻⁸ * 8.92 x 10³)

Length, L= 1.82m

In conclusion, the length of the wire is obtained from the mass and density of the copper wire.

Learn more about length of wire at: https://brainly.in/question/49182286

#SPJ4

3 0

1 year ago

Evidence of wave theory light​

Evidence of wave theory light