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nevsk [136]
2 years ago
9

In one or two sentences make and justify a claim about two aspects of the picture that illustrate behaviors of light.

Physics
1 answer:
Studentka2010 [4]2 years ago
3 0

We can make the claim that light can be reflected, which is justified by the reflection seen on the water as well as the colors seen in the photo.

<h3>How can we tell that light is being reflected?</h3>

We can claim that light can and is being reflected in this image due to the reflection in the water as well as the colors. As the light traveling in the air collides with the water, it abruptly changes speed, causing a portion of these waves to be reflected back, thus creating a mirror image on the surface of the water. This is also the case with colors, which are caused by a material reflecting all but one wavelength of light.

Therefore, we can confirm that it is possible to make the claim that light can be reflected, which is justified by the reflection seen on the water as well as the colors seen in the photo.

To learn more about how light behaves visit:

brainly.com/question/1363382?referrer=searchResults

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The top of lake is frozen as atmospheric temperature is -10 degree Celsius the temperature of the bottom of the lake is most lik
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4°Celcius Water is densest at 4°C

4 0
4 years ago
A 30 N rock falls from a 40 m cliff. At what point during its fall are its
vaieri [72.5K]

Answer:

<em>Both energies are equal when the rock has fallen 20 m or equivalently when it is at a height of 20 m.</em>

Explanation:

<u>Potential and Kinetic Energy</u>

The gravitational potential energy is the energy an object has due to its height above the ground. The formula is

U=mgh

Where:

m = mass of the object

g = acceleration of gravity (9.8~m/s^2)

h = height

Note we can also use the object's weight W=mg into the formula:

U=Wh

The kinetic energy is the energy an object has due to its speed:

\displaystyle K=\frac{1}{2}mv^2

Where v is the object's speed.

Initially, the object has no kinetic energy because it's assumed at rest.

The W=30 N rock falls from a height of h=40 m, thus:

U=30*40=1,200 J

Since the sum of the kinetic and potential energies is constant:

U' + K' = 1,200 J

Here, U' and K' are the energies at any point of the motion. Since both must be the same:

U' = K' = 600 J

U'=Wh'=600

Solving for h':

\displaystyle h'=\frac{600}{W}=\frac{600}{30}=20~m

Both energies are equal when the rock has fallen 20 m or equivalently when it is at a height of 20 m.

3 0
3 years ago
The power in our homes and buildings cycles at a frequency of 60Hz. If someone accidentally dropped a power line into a holding
sp2606 [1]

Answer:

The answer is "Rigor mortis".

Explanation:

When the very large volume will be that the progress of its postponed by calcium and magnesium. The causes brain intensification of a liver due to the change throughout the myofibrils within a week of dying of its organism. When anyone accidentally spilled a power cable into a rank for toads, one's tissue will be disrupted instantly by stringent deaths.

8 0
3 years ago
Need help on this one please
mamaluj [8]
The atomic number is a neutron
3 0
3 years ago
Near the surface of Earth an electric field points radially downward and has a magnitude of approximately 100 N/C. What charge (
pentagon [3]

Answer:

q=2.997\times 10^{-4}C

Sign-Negative

Explanation:

We are given that

Electric field =E=100NC^{-1} (Radially downward)

Acceleration=0.19 ms^{-2}(Upward)

Mass of charge=3 g=3\times 10^{-3}kg

1kg=1000g

We have to find the magnitude and sign of  charge would have to be placed on a penny .

By newton's second law

\sum F_y=ma

\sum F_y=qE-mg

Substitute the values then we get

qE-mg=ma

Substitute the values then we get

q(100)-3\times 10^{-3}(9.8)=3\times 10^{-3}(0.19)

100q-29.4\times 10^{-3}=0.57\times 10^{-3}

100q=0.57\times 10^{-3}+29.4\times 10^{-3}=29.97\times 10^{-3}

q=\frac{29.97\times 10^{-3}}{100}

q=2.997\times 10^{-4}C

Sign of charge =Negative

Because electric force acting  in opposite direction of electric field therefore,charge on penny will be negative.

4 0
4 years ago
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