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Sergeu [11.5K]
3 years ago
14

Internal Forces are :

Physics
1 answer:
Ugo [173]3 years ago
8 0






Hi Pupil Here's your answer ::






➡➡➡➡➡➡➡➡➡➡➡➡➡



They are always balanced forces since if they are applied on an object the resultant of tgese forces on the object is Zero

So, the option A is the correct. They are always balanced forces.
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A mechanic needs to replace the motor for a merry-go-round. The merry-go-round should accelerate from rest to 1.5 rad/s in 7.0 s
marta [7]

Answer

given,

initial speed of merry-go-round = 0 rad/s

final speed of merry-go-round = 1.5 rad/s

time = 7 s

Radius of the disk = 6 m

Mass of the merry-go-round = 25000 Kg

Moment of inertia of the disk

I = \dfrac{1}{2}MR^2

I = \dfrac{1}{2}\times 25000\times 6^2

   I = 450000 kg.m²

angular acceleration

\alpha = \dfrac{\omega_f-\omega_0}{t}

\alpha = \dfrac{1.5-0}{7}

\alpha =0.214\ rad/s^2

we know,

\tau= I \alpha

\tau= 450000\times 0.214

\tau=96300\ N.m

8 0
3 years ago
A(n) 2602 kg van runs into the back of a(n)
forsale [732]

Answer:

8.5 m/s

Explanation:

please see paper for the work!

8 0
2 years ago
Which major planet has the largest . . . A. semimajor axis? B. average orbital speed around the Sun? C. orbital period around th
Yuliya22 [10]
<h2>Mercury, Neptune, and Jupiter </h2>

Explanation:

  • Mercury has the largest semimajor axis that is 5.791 x 107 in km.
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  • Neptune has the longest orbital speed around the sun of any planet in the Solar System which is equivalent to 164.8 years (or 60,182 Earth days)
  • Jupiter has the largest eccentricity.

Hence, the answer is Mercury, Neptune, and Jupiter respectively.

6 0
3 years ago
What si the name of the state change water is going through as it boils?
Blababa [14]
It evaporates into a vapor

  ~~~hope this helps~~~
~~have a beautiful day~~
            ~davatar~
3 0
2 years ago
A 200-N woman is standing on a concrete floor. How much force does the floor exert on her?
lisov135 [29]
C.........................
6 0
3 years ago
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