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baherus [9]
2 years ago
15

What are the benefits and dangers of visual light waves

Physics
1 answer:
Anton [14]2 years ago
5 0

Blue-violet light on the visible light spectrum can cause damage to retina cells, increasing one's risk of developing age-related macular degeneration, explains Essilor.


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What is motion and explain also<br>​
N76 [4]

Answer:

the action or process of moving or being moved.

Explanation:

In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.

4 0
2 years ago
A block of mass 9.2kg rests on a slope an angle of 26.9∘ relative to the horizontal. What is the size of the contact force norma
Olegator [25]

Answer:

80.4 N

Explanation:

As the block is at rest on the slope, it means that all the forces acting on it are balanced.

We are only interested in the forces that act on the block along the direction perpendicular to the slope. Along this direction, we have two forces acting on the block:

- The normal reaction N (contact force), upward

- The component of the weight of the block, mg cos \theta, downward, where m is the mass of the block, g is the gravitational acceleration and \theta is the angle of the incline

Since the block is in equilibrium along this direction, the two forces must balance each other, so they must be equal in magnitude:

N=mg cos \theta

And by substituting the numbers into the equation, we find the size of the contact force normal to the slope:

N=(9.2 kg)(9.8 m/s^2)(cos 26.9^{\circ})=80.4 N

6 0
3 years ago
Which subatomic particles are in the nucleus of an atom?
artcher [175]
Protons and neutrons
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A baby elephant trots in a straight line along a river. The horizontal position of the elephant in meters over
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Displacement -6

Distance 24

Explanation:

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Shattered glass from a window is scattered across the floor what is the chemical treatment
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Explanation:

3 0
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