2 years ago

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Physics

2 answers:

andreyandreev [35.5K]2 years ago

5 0

Tyyyyyyyyyyyyyy for what

Aliun [14]2 years ago

4 0

Answer:

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Explanation:

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rjkz [21]

Explanation:

density= mass/volume

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2 years ago

A disk of mass M and radius R rotates at angular velocity ω0. Another disk of mass M and radius r is dropped on top of the rotat

AleksandrR [38]

Answer:

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As we know that there is no external torque on the system of two disc

then the angular momentum of the system will remains conserved

So we will have

$L_i = L_f$

now we have

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$L_f = (\frac{1}{2}MR^2 + \frac{1}{2}Mr^2)\omega$

now from above equation we have

$(\frac{1}{2}MR^2)\omega_o = (\frac{1}{2}MR^2 + \frac{1}{2}Mr^2)\omega$

now we have

$\omega = \frac{MR^2\omega_o}{(MR^2 + Mr^2)}$

$\omega = \frac{(R^2\omega_o}{(R^2 + r^2)}$

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3 years ago

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Answer:

delta x= 100m

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The mass of a sample of iron is 31.5 g. The volume is 5 cm3. What is the density of iron in g/cm3?

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3 years ago

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