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2 years ago

9

How do plants absorb light energy from sun

2 answers:

yulyashka [42]2 years ago

5 0

Answer:

the answer is "from chloroplasts in their cells"

Explanation:

brilliants [131]2 years ago

3 0

There are plant cells called chloroplasts, plants leave chloroplasts which have chlorophyll that capture and absorb light energy from the sun.

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A ball is at rest at the top of a hill until a boy kicked it with his foot. What is the force that causes motion in this scenari

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The boy’s foot causes the motion. His foot is the one that causes the ball to roll down the hill.

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2 years ago

1. The thin top layer of the crust is called the Crust. What are the two types of

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Oceanic and continental

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Consider a situation where the acceleration of an object is always directed perpendicular to its velocity. This means that

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this situation would not be physically possible

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Bingel [31]

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At the Earth's surface, warm air expands and rises, creating
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3 years ago

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A hollow cylinder of mass 2.00 kg, inner radius 0.100 m, and outer radius 0.200 m is free to rotate without friction around a ho

Aneli [31]

Answer:

h=2.86m

Explanation:

In order to give a quick response to this exercise we will use the equations of conservation of kinetic and potential energy, the equation is given by,

$\Delta PE_i + \Delta KE_i = \Delta PE_f +\Delta KE_f$

There is no kinetic energy in the initial state, nor potential energy in the end,

$mgh+0=0+KE_f$

In the final kinetic energy, the energy contributed by the Inertia must be considered, as well,

$mgh = (\frac{1}{2}mv^2+\frac{1}{2}I\omega^2)$

The inertia of the bodies is given by the equation,

$I=\frac{m(R_1^2+R^2_2)}{2}$

$I=\frac{2(0.2^2+0.1^2)}{2}$

$I=0.05Kgm^2$

On the other hand the angular velocity is given by

$\omega =\frac{v}{R_2}=\frac{4}{1/5} = 2rad/s$

Replacing these values in the equation,

$(0.5)(9.8)(h) =\frac{1}{2}*0.5*4^2+\frac{1}{2}*0.05*20^2$

Solving for h,

$h=2.86m$

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2 years ago