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Arte-miy333 [17]
2 years ago
8

Question 1 of 5

Physics
1 answer:
Elina [12.6K]2 years ago
3 0

Answer:

solar energy warms most of the earths surface

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In the visible light portion of the electromagnetic spectrum, each __________ is determined by its wavelength.
Archy [21]

Answer:

A) color

Explanation:

Visible light is a portion of the electromagnetic spectrum, that includes wavelengths approximately from 380 nm to 750 nm.

It is the only part of the electromagnetic spectrum that the human eye can see. Depending on the wavelength of the light in this region, we perceive the light as a different color.

Therefore, each color is associated to a different range of wavelength, as follows:

Violet 380 - 450 nm

Blue 450 - 495 nm

Green 495 - 570 nm

Yellow 570 - 590 nm

Orange 590 - 620 nm

Red 620 - 750 nm

6 0
3 years ago
I'm not even sure if this is the right category but here we go. All my points and brainliest. I'm counting on you guys.
zlopas [31]

Answer:

When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.

Explanation:

Brainliest???

7 0
3 years ago
3 kg
Jet001 [13]

Answer:

The total normal force acting on the system is approximately 58.8 N

Explanation:

The masses arranged in the stack are;

3 kg, 2 kg, and 1 kg

The mass of the stack system, m = 3 kg + 2 kg + 1 kg = 6 kg

Weight = The force of gravity on an object = m·g

Where;

m = The mass of the object

g = The acceleration due to gravity ≈ 9.8 m/s²

∴ The weight of the stack system, W ≈ 6 kg × 9.8 m/s² ≈ 58.8 N

The direction of the weight force = Perpendicular to the surface (acting downwards)

From Newton's third law of motion, the normal force acts perpendicular to the plane and it is equal in magnitude to the force acting perpendicular to the plane

∴ The magnitude of the total normal force acting on the system = The magnitude of the weight of the system ≈ 58.8 N

The (magnitude of the) total normal force acting on the system ≈ 58.8 N

3 0
3 years ago
1.
kotykmax [81]

Answer:

Option B

Explanation:

As we know phase difference is equal to

\psi = \frac{2\pi }{\lambda} * \Delta ----Eq (1)

where

\Delta is the physical difference between two points = 0.025 m

\lambda is equal to \frac{v}{f}

\lambda = \frac{20}{100} = 0.2

Substituting the given values in above equation, we get -

\psi =

\frac{2\pi }{0.2} *0.025\\\frac{\pi }{4}

Hence, option B is correct

5 0
3 years ago
When you put water in a freezer it will turn into ice. This is because as the water _____ the movement of its particles ______.
Marta_Voda [28]
<span>A) cools down, slows down. When you put water in the freezer, it cools down and then the particles reduce their speed until they eventually form a solid by freezing.</span>
7 0
3 years ago
Read 2 more answers
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