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ozzi
3 years ago
7

A book is resting on the table. Forces are exerted _____.

Physics
2 answers:
tino4ka555 [31]3 years ago
4 0

for the last one, its 2 m/s2

scoray [572]3 years ago
3 0
Forces are exerted I believe : all of the above
The action force might be Tyler throwing the ball
I don't know the last one
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Explanation:

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In which region of the electromagnetic spectrum is most of earth's outgoing terrestrial radiation?
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Are you for or against using nuclear energy?
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4 0
3 years ago
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A device consisting of four heavy balls connected by low-mass rods is free to rotate about an axle. It is initially not spinning
zubka84 [21]

The angular speed of the device is 1.03 rad/s.

<h3>What is the conservation of angular momentum?</h3>

A spinning system's ability to conserve angular momentum ensures that its spin will not change until it is subjected to an external torque; to put it another way, the rotation's speed will not change as long as the net torque is zero.

Using the conservation of angular momentum

L_{i}=L_{f}

Here,  = the system's angular momentum before the collision

L_{i} = 0 + mv

= (0.005)(450)(0.752)

= 1.692 kgm²/s

The moment of inertia of the system is given by

I = 2(M₁R₁² + M₂R₂²)+ mR₁²

= 2[(1.2)(0.8)² +(0.5)(0.3)²]+0.005(0.8)²

= 1.6292 kgm²

Here,  = Iω

So,

1.692 = 1.6292(ω)

ω = 1.03 rad/s

To know more about the conservation of angular momentum, visit:

brainly.com/question/1597483

#SPJ1

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1 year ago
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