Nebular hypothesis.
Explanation:
- The first version of the nebula hypothesis was proposed by Immanuel Kant and Pierre Laplace.
- Today the hypothesis has been revised to fit into more current and update realities about how our solar system emerged.
- The hypothesis is the widely accepted explanation to the origin and evolution of the solar system.
- It suggests that the star and the planets that makes up the solar system were products of a huge cloud of dust called the nebular.
- The nebular is a huge mass of interstellar dusts.
- The cloud collapsed and condensed under gravitational pull of the materials.
- A center core that resulted in the formation of our star, sun emerged and the rest of the particles formed our planet.
Learn more:
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Law of conservation of momentum states that when two objects collide with each other , the sum of their linear momentum always remains same or we can say conserved and is not effected by any action, reaction only in case is no external unbalanced force is applied on the bodies.
Let,
m
A
= Mass of ball A
m
B
= Mass of ball B
u
A
= initial velocity of ball A
u
B
= initial velocity of ball B
v
A
= Velocity after the collision of ball A
v
B
= Velocity after the collision of ball B
F
ab
= Force exerted by A on B
F
ba
= Force exerted by B on A
Now,
Change in the momentum of A= momentum of A after the collision - the momentum of A before the collision
= m
A
v
A
−m
A
u
A
Rate of change of momentum A= Change in momentum of A/ time taken
=
t
m
A
v
A
−m
A
u
A
Force exerted by B on A (F
ba
);
F
ba
=
t
m
A
v
A
−m
A
u
A
........ [i]
In the same way,
Rate of change of momentum of B=
t
m
b
v
B
−m
B
u
B
Force exerted by A on B (F
ab
)=
F
ab
=
t
m
B
v
B
−m
B
u
B
.......... [ii]
Newton's third law of motion states that every action has an equal and opposite reaction, then,
F
a
b=−F
b
a [ ' -- ' sign is used to indicate that 1 object is moving in opposite direction after collision]
Using [i] and [ii] , we have
t
m
B
v
B
−m
B
u
B
=−
t
m
A
v
A
−m
A
u
A
m
B
v
B
−m
B
u
B
=−m
A
v
A
+m
A
u
A
Finally we get,
m
B
v
B
+m
A
v
A
=m
B
u
B
+m
A
u
A
This is the derivation of conservation of linear momentum.
Two factors that determine where an organism lives in an aquatic ecosystem are temperature<span> and oxygen. 2. Compare the </span>littoral zone<span> of a lake with the </span>benthic zone<span> of a lake. </span>Littoral zone<span> is near the shore and aquatic life is diverse and abundant.
</span>
Answer:
gravity
Explanation:
there eould be a different gravitational strenght on both of the planets causing it to weigh more, or less
