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Ann [662]
3 years ago
6

After the first solid grains formed in our solar system, these particles could then grow by the process of ____, the collision a

nd sticking of one particle with another to continue the formation of planetesimals. Each of these has many atoms or molecules.
Physics
1 answer:
labwork [276]3 years ago
4 0

Answer:

Accretion

Explanation:

Accretion is the process by which there is an accumulation of particles into a bigger object by attracting more mass by gravitational force into an accretion disk. This is one of the first steps in the formation of our solar system. There was a collapse of a gas cloud which resulted in most of the mass collecting in the center leading to the formation of the sun and the rest spread out forming the planets.

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Which vector is the sum of vectors a and b
jeka57 [31]

Answer:

C

Explanation:

Vector A points up

Vector B points right

The combination must be both up and right which is C

5 0
3 years ago
A magic medallion is suspended from a string inside a compartment of Hogwarts Express which is running straight westwards on hor
Serggg [28]

Answer:

a = 1 m/s²  and

Explanation:

The first two parts can be seen in attachment

We use Newton's second law on each axis

Y axis

      Ty - W = 0        

      Ty = w

X axis

     Tx = m a

With trigonometry we find the components of tension

    Sin θ = Ty / T

    Ty = T sin θ

    Cos θ = Tx / T

    Tx = T cos θ

We calculate the acceleration with kinematics

   Vf = Vo + a t

   a = (Vf -Vo) / t

   a = (20 -10) / 10

   a = 1 m/s²

We substitute in Newton's equations

     

  T Sin θ = mg

  T cos θ = ma

We divide the two equations

  Tan θ = g / a

  θ = tan⁻¹ (g / a)

  θ = tan⁻¹ (9.8 / 1)

  θ = 84º

We see that in the expression of the angle the mass does not appear therefore you should not change the angle

4 0
2 years ago
You need to pull up the cart up this ramp. How would you change this ramp so it is easier to pull the cart up?
natali 33 [55]
I would make the ramp flatter. In doing so the ramp would have to be longer.
6 0
3 years ago
What is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance?
Sergio [31]
Salutations!

What is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance?

Molecules is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance. It is a group of atoms bounded together, and it can participate in a chemical reaction/

Hope I helped (:

Have a great day!
5 0
3 years ago
Cause and Effect: How do changes in temperature affect air? Pls hurry I’m being timed
Elan Coil [88]
As the molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.
6 0
3 years ago
Read 2 more answers
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