3 years ago

Describe how finches of the Galapagos Islands adapted over time.

Physics

1 answer:

timofeeve [1]3 years ago

7 0

They moved to different islands and adapted to the habitats of their islands

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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.

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

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

$\omega=0.37 [rad/s]$

I hope it helps you!

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3 years ago

For the following statements, choose the word or words inside the parentheses that serve to make a correct statement. Each state

AnnyKZ [126]

Answer:

a) Temperatura, b) Temperature, c) Constant , d) None of these , e) Gibbs enthalpy and free energy (G)

Explanation:

a) the expression for ideal gases is PV = nRT

Temperature

b) The internal energy is E = K T

Temperature

c) S = ΔQ/T

In an isolated system ΔQ is zero, entropy is constant

Constant

d) all parameters change when changing status

None of these

e) Gibbs enthalpy and free energy

7 0

2 years ago

What is the distance to school if it took bob 1 hour to get to it going at the speed of 1 km/h.

astraxan [27]

Answer:

1 km

Explanation:

Bob travels at one km/h and it takes him one hour to get there.

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3 years ago

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Im reading a book with 398 pages. use p to represent the number of pages i used

kogti [31]

Pg 398
hope I helped

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2 years ago

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What si unit replaces pound

Artist 52 [7]

The SI unit of mass is the kilogram, and
the SI unit of force is the Newton.

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3 years ago