3 years ago

Mention two advantage of writing very big and small numbers in tge power of ten.

Physics

1 answer:

Elenna [48]3 years ago

7 0

Easier to write, easier to read, easier to understand, easier to compare

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A professor sits at rest on a stool that can rotate without friction. The rotational inertia of the professor-stool system is 4.

Anestetic [448]

Answer:

$\omega=0.37 [rad/s]$

Explanation:

We can use the conservation of the angular momentum.

$L=mvR$

$I\omega=mvR$

Now the Inertia is I(professor_stool) plus mR², that is the momentum inertia of a hoop about central axis.

So we will have:

$(I_{proffesor - stool}+mR^{2})\omega=mvR$

Now, we just need to solve it for ω.

$\omega=\frac{mvR}{I_{proffesor-stool}+mR^{2}}$

$\omega=\frac{1.5*2.7*0.4}{4.1+1.5*0.4^{2}}$

$\omega=0.37 [rad/s]$

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4 years ago

Determine the amount of work done on an ideal gas as it is heated in an enclosed thermally insulated cylinder topped with a free

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Answer:

W = 3/2 n (T₁- T₂)

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Let's use the first law of thermodynamics

ΔE = Q + W

in this case the cylinder is insulated, so there is no heat transfer

ΔE = W

internal energy can be related to the change in temperature

ΔE = 3/2 n K ΔT

we substitute

3/2 n (T₂-T₁) = W

as the work is on the gas it is negative

W = 3/2 n (T₁- T₂)

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Mention two advantage of writing very big and small numbers in tge power of ten.​

Mention two advantage of writing very big and small numbers in tge power of ten.