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4 years ago

I question wasn't answer how long will a tongue piercings close I had mine about 7 years and been out about 5 years

1 answer:

8 0

Honestly, there's not an actual answer to how long will a tongue piercing close. If you research it on google you get a different answer; some say it doesn't close and some say it closes fast.

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Galileo conducted controlled experiments to find out if the mass of the pendulum bob affected the period of the swing. Write a d

stiv31 [10]

According to my guesses, he should have swung the pendulam bob and noted its time period. In order to observe the effect of mass, he would have repeated the experiment with varied pendulam bobs. Hope this helped!

5 0

3 years ago

A man can throw a ball a maximum horizontal distance of 56.1523 m. The acceleration of gravity is 9.8 m/s 2 . How far can he thr

IceJOKER [234]

Answer:

hmax= 28.2 m

Explanation:

Horizontal movement:

For the horizontal movement, as once released, nothing exerts any influence on the ball in the horizontal direction, it will keep moving at a constant speed, so, the equation for the horizontal displacement is as follows:

x = v₀*t = 56.1523 m

Vertical movement:

For the vertical movement, once thrown upward, the ball is under the sole influence of gravity, g, which causes the ball to accelerate downward, and which magnitude is 9.8 m/s².
At any time, applying the definition of acceleration, we can find the value of the velocity, as follows:

$vf = vo-g*t$

When the ball reaches to the maximum height, the ball will come momentarily at rest, so vf =0.
At this point, we can find the time at which the ball reached to its highest point, as follows:

$t = \frac{vo}{g}$

In the same way, we can find the maximum height reached by the ball, just replacing this value of time in the equation for the displacement, in the vertical direction, as follows:

$h = vo*t -\frac{1}{2} *g*t^{2}$

$hmax = vo*(\frac{vo}{g}) -\frac{1}{2} *g*(\frac{vo}{g} )^{2} =\frac{vo^{2}}{2*g}$

Now, returning to the horizontal movement, as the time must be the same for both movements, we can replace the value for time we have just found, in the equation for the horizontal displacement:

$x = v0x * t = v0x* \frac{voy}{g}$

But as we know that vox = voy, we can rewrite the equation above as follows:

$x = v0* t = v0* \frac{vo}{g} =\frac{vo^{2} }{g} = 56.1523 m$

We can solve for v₀, as follows:

$vo = \sqrt{56.1523 m *9.8 m/s2} =23.5 m/s$

Now, we can replace this value in the expression for hmax, as follows:
$hmax = \frac{vo^{2}}{2*g} =\frac{(23.5m/s)^{2}}{2*9.8 m/s2} = 28.2 m$

4 0

3 years ago

How is thermal energy from the sun distributed on Earth ?

Mrac [35]

Conduction and convection both require some material substance
to move heat from one place to another, and there's none of that
between the sun and Earth.

The only way for thermal energy to move from place to place with
nothing in between is by the process of radiation, and that's how
it gets here from the sun.

3 0

3 years ago

In prokaryotic and eukaryotic cells the amount of water in the cell is kept at a steady state. The organelles

Len [333]

Answer:

Explanation:

It would not be C because prokaryotic cells don't have a nucleus. And if you're looking for a body in the cell that controls the nutrients and water it would be A.

3 0

3 years ago

at certain times the demand for electric energy is low and electric energy is used to pump water to a reservoir 45 m above the g

Readme [11.4K]

The mass of water that must be raised is $5.25\cdot 10^7 kg$