When light enters a lens, C) it is refracted.
Since it is bent when it enters a lens, it has to be refracted.
Answer:
The space surrounding a charged object is affected by the presence of the charge; an electric field is established in that space. A charged object creates an electric field - an alteration of the space or field in the region that surrounds it. Other charges in that field would feel the unusual alteration of the space.
Explanation:
C. Usually when an atom loses or gains an electron, it is because it is trying to satisfy the Octet Rule. The Octet Rule states that an atom is at its stablest when it has 8 valence electrons (two in helium's case)
If you look on the periodic table, elements on the left (Alkaline Metals) are the most reactive because they only have one valence electron (or electron in the outer shell). Elements on the right (Noble Gases) are the least reactive because they have a full outer shell of 8 valence electrons.
Later on you will find that as stability decreases as you go down the periodic table but that is a discussion for a different time.
Answer:
116.1 kgm²/s
1.12718 rad/s
Decreases
Explanation:
m = Mass of girl = 43 kg
M = Mass of roundabout = 120 kg
v = Velocity of roundabout = 2.7 m/s
r = Radius of roundabout = 1 m = R
I = Moment of inertia
Her angular momentum
Magnitude of angular momentum is 116.1 kgm²/s
Here the angular momentum is conserved
Angular speed of the roundabout is 1.12718 rad/s
Initial kinetic energy
Final kinetic energy
The overall kinetic energy decreases as can be seen. This loss is converted to heat.
It was not the first time that a person who was in a few weeks ago, I
