3 years ago

Can you give simple definition of entropy?

1 answer:

6 0

Definition of Entropy:

The measure of a systems thermal energy per unit temperature
that is unavailable for doing useful work.

Hope this helps!

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A shark is cruising at 4 m/s when it sees a fish straight

Oksanka [162]

Answer:

Distance, S = 13m

Explanation:

Given the following data;

Initial velocity, u = 4m/s

Final velocity, v = 9m/s

Time, t = 2 seconds

To find the distance, S;

First of all, we would determine the acceleration of the shark.

Acceleration = (v - u)/t

Acceleration = (9 - 4)/2

Acceleration = 5/2

Acceleration = 2.5m/s²

Now, to find the distance we would use the second equation of motion

S = ut + ½at²

Substituting into the equation, we have

S = 4(2) + ½*2.5*2²

S = 8 + 1.25*4

S = 8 + 5

Distance, S = 13m

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4 years ago

Which of the following absorbs the MOST heat energy?

goldfiish [28.3K]

Darker is warmer C. Black objects.

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3 years ago

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Science anybody? I don't know how to answer this question-

Archy [21]

Answer: I think it's this? I'm very sorry if I am wrong

Domain: Archaea Kingdom: Monera

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3 years ago

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You tie the loose end of a 0.1 kg yo-yo string to your finger and then release the yo-yo so that it spins down toward the ground

Nikitich [7]

Answer:

The answer is " $5.06 \times 10^{-6} \ kg \ m^2$ "

Explanation:

$\to E_1=0..............(i)\\\\\to E_2= \frac{mV^2}{2} +\frac{Iw^2}{2} - mgh.............(ii)\\\\ \Delta E=0\\\\\to mgh= \frac{mV^2}{2} +\frac{Iw^2}{2} \\\\ \to 2 \ mgh= mV^2 +Iw^2\\\\ \to 2 \ mgh- mV^2 =Iw^2\\\\ \to m(2gh- V^2) =Iw^2\\\\ \to I= \frac{m(2gh- V^2)}{w^2}$

$= 5.06 \times 10^{-6} \ kg \ m^2$

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3 years ago

A basketball is resting on the ground.

kakasveta [241]

Answer:

Explanation:

there is no net force on the basketball

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3 years ago