3 years ago

ohms Long describes the relationship between electronic current voltage and ___

Physics

1 answer:

levacccp [35]3 years ago

5 0

Answer:

voltage ,current and resistance

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An ice skater spins at 2.5 rev/s when his arms are extended. He draws his arms in and spins at 10.0 rev/s. By what factor does h

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The moment of inertia decreased by a factor of 4

Explanation:

Given;

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Where;

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I₂ is the final moment of inertia

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A perfectly flexible cable has length L, and initially it is at rest with a length Xo of it hanging over the table edge. Neglect

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Answer:

$X=X_o+\dfrac{1}{2}gt^2$

Explanation:

Given that

Length = L

At initial over hanging length = Xo

Lets take the length =X after time t

The velocity of length will become V

Now by energy conservation

$\dfrac{1}{2}mV^2=mg(X-X_o)$

$V=\sqrt{2g(X-X_o)}$

We know that

$\dfrac{dX}{dt}=V$

$\dfrac{dX}{dt}=\sqrt{2g(X-X_o)}$

$\sqrt{2g}\ dt=(X-X_o)^{-\frac{1}{2}}dX$

At t= 0 ,X=Xo

So we can say that

$X=X_o+\dfrac{1}{2}gt^2$

So the length of cable after time t

$X=X_o+\dfrac{1}{2}gt^2$

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Read 2 more answers

￼ohms Long describes the relationship between electronic current voltage and￼ ___

ohms Long describes the relationship between electronic current voltage and ___