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Semmy [17]
2 years ago
7

What is average velocity?

Physics
2 answers:
Ber [7]2 years ago
6 0
The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. According To a website on google 
Alex17521 [72]2 years ago
5 0
Average Velocity<span>, General. The </span>average<span> speed of an object is defined as the distance traveled divided by the time elapsed. </span>Velocity<span> is a vector quantity, and </span>average velocity<span> can be defined as the displacement divided by the time.</span>
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A rhinoceros beetle rides the rim of a disk rotating like a merry-go-round counterclockwise.
Pie

Answer:

a) The angular momentum remains constant because the system is isolated

b)  if the beetle walks

- In the direction of rotation of the disc, the angular velocity of the disc decreases.

-   If the beetle goes in the opposite direction] to the disk the angular velocity increases

Explanation:

The angular momentum is

           L = I w

For an isolated system the angular momentum must be preserved.

Let us define the system as formed by the beetle plus the disk, in this case when the beetle walks, the forces are an internal force (action and reaction), therefore the angular momentum is conserved. Let's write in two moments

Initial. Before the beetle movement

           L₀ = I w₀

Final. When the beetle is moving

          L_{f} = I w + I₂ w₂

The moment is preserved

           L₀ =  L_{f}

           I w₀ = I w + I₂ w₂

 

We cleared the final angular speed of the disk

          w = w₀ - w₂ I₂ / I

In general, the moment of inertia of the beetle is less than the moment of inertia of the disc and its angular velocity is also small.

Let's examine the questions.

a) The angular momentum remains constant because the system is isolated

b) The angular velocity of the system changes according to the previous equation, if the beetle walks

- In the direction of rotation of the disc, the angular velocity of the disc decreases.

-   If the beetle goes in the opposite direction] to the disk the angular velocity increases

8 0
2 years ago
Calculate the amount of work done if you use a 100N force to push a 50kg box 5m across the kitchen floor.
irinina [24]
So if the formula for work is force times displacement times cosine(theta), you'd plug in the numbers

100x5 (since there's no angle in the problem, cosine(theta) isn't used

100x5 = 500

So the answer would be B.

Hope that helps!
6 0
2 years ago
Read 2 more answers
To form a negative ion, an atom will give up an electron to gain stability <br><br> True or False?
Mumz [18]
It is a completely false statement that to form a negative ion, an atom will <span>give up an electron to gain stability. The correct option among all the options that are given in the question is the second option. Negative ion has more electrons and so it would be wrong to say that it will give up an electron. I hope the answer has helped you.
</span>
3 0
2 years ago
3 What is the displacement of a satellite when it makes a complete round along its circular path?​
kirill [66]

Answer:

0

Explanation:

The displacement is zero since it goes in a full circle and ends up where it started.

4 0
2 years ago
Help me with this PLEASE, I'M being timed
juin [17]

Answer:

C

Explanation:

6 0
3 years ago
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