4 years ago

Where Is Earth's heat energy most concentrated?

Physics

1 answer:

Eva8 [605]4 years ago

8 0

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If a photon of Light leaves the sun than reachers the earth 494 second later. What is the distance from the earth to sun

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The distance from the Earth to the Sun is 92.96 million mi.

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4 years ago

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The diagram shows a person holding a bow and arrow.

Serhud [2]

pulling farther back on the string

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pulling back will increase kinetic energy

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3 years ago

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A person slaps her leg with her hand, which results in her hand coming to rest in a time interval of 2.75 ms from an initial spe

bazaltina [42]

Answer:

1350N

Explanation:

$2.75 ms = 2.75*10^{-3}s$

The force exerted on the hand would be the momentum divided by the duration of contact.

As the hand is coming to rest, final velocity would be 0

$F = \frac{\Delta P}{\Delta t} = \frac{m(0 - v)}{\Delta t} = \frac{1.65*(2.25 - 0)}{2.75 * 10^{-3}} = -1350 N$

The magnitude of the force would be 1350N

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3 years ago

An ice skater has a moment of inertia of 2.5 kg.m2 when her arms are extended and a moment of inertia of 1.2 kg.m2 when her arms

Damm [24]

Answer:

$\omega=4.7916\ rad.s^{-1}$

Explanation:

Given:

moment of inertia of the skater with extended arms, $I'=2.5\ kg.m^2$

moment of inertia of the the skater with pulled-in arms, $I=1.2\ kg.m^2$

angular velocity of the skater with extended arms, $\omega'=2.3\ rad.s^{-1}$

<u>Using the law of conservation of angular momentum:</u>

$I'.\omega'=I.\omega$

$2.5\times 2.3=1.2\times \omega$

$\omega=4.7916\ rad.s^{-1}$

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3 years ago

The model of the Adam has changed over time in light of new knowledge and discoveries. Which option correctly describes one such

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I think the correct answer from the choices listed above is option 3. The statement that correctly describe such change would be that about 1900 J.J. Thomas discovered electrons were negatively charged particles. Hope this answers the question. Have a nice day.

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4 years ago