Based on molecular orbital theory, the only molecule in the list below that has unpaired electrons is ________.
1 answer:
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A person who is not wearing a seatbelt during a collision will be thrown forward because it maintains forward motion
<h3>Further explanation </h3>In Newton's law, it is stated that if the resultant force acting on an object of magnitude is zero, it can be formulated :
then the object tends to defend itself from its state. So for objects in a state of movement, objects tend to move forever. Likewise, for objects in a state of rest, they tend to remain forever. The tendency of objects like this is called<em> inertia </em>
The size of inertia is proportional to mass, the greater the mass of the object, the greater the inertia of the object.
In objects with mass m that move translatively, the object will maintain its linear velocity
When we are in a vehicle that moves forward, then we will still maintain a state of forwarding motion. If our vehicle stops suddenly, then we keep moving forward so we will be pushed forward. From this point, the use of a safety belt serves to hold back our movements so that there are no fatal accidents or collisions.
<h3>Learn more </h3>
Newton's law of inertia
example of Newton's First Law of inertia
law of motion
Keywords: inertia, Newton's First Law
C. A could be ruby (speed of light = 170,000 km/s); B could be diamond (speed of light = 120,000 km/s).
Explanation:
Refraction is a phenomenon that occurs when a light rays crosses the boundary between two different mediums.
When this occurs, the light wave changes speed and also direction, according to Snell's law:
(1)
where
is the index of refraction of the first medium
is the index of refraction of the second medium
is the angle of incidence (the angle between the incident ray and the normal to the boundary)
is the angle of refraction (the angle between the refracted ray and the normal to the boundary)
The index of refraction is the ratio between the speed of light in a vacuum (c) and the speed of light in the medium (v):
Using this definition, we can rewrite eq.(1) as
Where is the speed of light in the 2nd medium and
the speed of light in the 1st medium.
Now let's analyze the situation represented in the figure: we see that as the light ray enters the 2nd medium, it bends towards the normal, this means that the angle of refraction is smaller than the angle of incidence:
This means that
And therefore,
So, the speed of light in the second medium is smaller than the speed of light in the first medium: this occurs only in option C), which is therefore the correct choice.
Learn more about refraction:
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