Which is found farthest from the center of an atom?

The Achilles tendon connects the muscles in your calf to the back of your foot. When you are sprinting, your Achilles tendon alt

drek231 [11]

Answer:

5 mm

Explanation:

Youngs's modulus (Y) is described by the following expression:

$Y=\frac{F*L}{\Delta L*A}$

Where F is the force exerted on the tendon, L is its length, A is its area and ΔL is its change in length (stretching).

The force in this case is 8 times the weight of the runner:

$F= 8*m*g\\F= 8*70*9.8\\F=5488 N$

Therefore, the change in length of the tendon is given by:

$\Delta L=\frac{F*L}{Y*A}\\\Delta L=\frac{5488*0.15}{0.15*10^{10}*1.1*10^{-4}}\\\Delta L= 0.004989 m$

the runner's Achilles tendon will stretch by 0.004989 m, which is roughly 5 mm.

8 0

3 years ago

NASA is giving serious consideration to the concept of solar sailing. A solar sailcraft uses a large, low mass sail and the ener

Stella [2.4K]

Answer:

Reflective

Explanation:

The radiation pressure of the wave that totally absorbed is given by;

$P_{abs}= \frac{I}{C}$

and While the radiation pressure of the wave totally reflected is given by;

$P_{ref}= \frac{2I}{C}$

Now compare the two-equation you can clearly see that the pressure due to reflection is larger than absorption therefore the sail should be reflective.

6 0

3 years ago

Can you get very smart?

Mamont248 [21]

Actually according to physics there should be needed a force to move things but our mind does not produce a force ...Apart from myths ...is seems quite impossible to move a object with ur mind

-Thanks for reading

6 0

3 years ago

In general, a (an)<br> metal will be more reactive than an alkaline earth metal in the same period.

Dmitriy789 [7]

Alkali metal

Explanation:

In general, an alkali metal will be more reactive than an alkaline earth metal in the same period.

What determines reactivity of metals?

The electropositivity of metals determines how reactive they are.

Electropositivity or metallicity is a measure of the tendency of atoms of an element to lose electrons.
It is closely related to ionization energy and the electronegativity of an element.
The lower the ionization energy of an element, the more electropositive or metallic it is
Also, the more reactive it will be because, it can lose electrons more readily.
Across a period from left to right, electropositivity decreases and from top to down a group, it increases.
Since alkali metals are more electropositive than alkali earth metals, they are more reactive and readily lose their only electron.
This is why the most reactive metal is francium found in the lower left corner on the periodic table.
For non-metals, electronegativity is the most important factor.

Learn more:

Alkali metals brainly.com/question/6324347

Electronegativity brainly.com/question/11932624

#learnwithBrainly

5 0

3 years ago

The force of gravity that the sun exerts on a planet is directed ______,

viktelen [127]

The force of gravity that the sun exerts on a planet is directed toward the sun. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

4 0

3 years ago