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3 years ago

What is the line running through the earth from pole to pole

Physics

2 answers:

Sav [38]3 years ago

7 0

The line is called the Prime Meridian.

Hope this helps...

kvv77 [185]3 years ago

4 0

The line that directly goes through the center core of the Earth is its axis while, the imaginary lines joining the poles which seem to be on the syrface of the Earth are known as "longitudes".

hope it helps you!

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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:

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

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

3 0

3 years ago

8–4. The tank of the air compressor is subjected to an internal pressure of 90 psi. If the internal diameter of the tank is 22 i

slamgirl [31]

Answer:

The stress S = 1935 [Psi]

Explanation:

This kind of problem belongs to the mechanical of materials field in the branch of the mechanical engineering.

The initial data:

P = internal pressure [Psi] = 90 [Psi]

Di= internal diameter [in] = 22 [in]

t = wall thickness [in] = 0.25 [in]

S = stress = [Psi]

Therefore

ri = internal radius = (Di)/2 - t = (22/2) - 0.25 = 10.75 [in]

And using the expression to find the stress:

$S=\frac{P*D_{i} }{2*t} \\replacing:\\S=\frac{90*10.75 }{2*0.25} \\S=1935[Psi]$

In the attached image we can see the stress σ1 & σ2 = S acting over the point A.

4 0

3 years ago

(1 point) Answer the following questions about the sphere whose equation is given by x2+y2+z2−4x+4y=73. x2+y2+z2−4x+4y=73. 1. Fi

pychu [463]

Answer:

R=9.

C=(2,-2,0).

Explanation:

Lets try to find how $x^2+y^2+z^2-4x+4y=73$ can be written in the form of $(x-a)^2+(x-b)^2+(x-c)^2=R^2$ , since then its radius R and center of coordinates C=(a,b,c) would be easily recognizable.

Since we have the terms -4x and +4y, they seem to have come from the terms $(x-2)^2$ and $(y+2)^2$ , and we would need to take care of the extra +4 by substracting then. More explicitly:

$(x-2)^2-4=x^2-4x+4-4=x^2-4x$ , as we had originally with the x terms

$(y+2)^2-4=y^2+4y+4-4=y^2+4y$ , as we had originally with the y terms

Which means:

$x^2-4x+y^2+4y+z^2=(x-2)^2-4+(y+2)^2-4+z^2$

Or, putting all together:

$(x-2)^2-4+(y+2)^2-4+z^2=73$

$(x-2)^2+(y+2)^2+z^2=9^2$

So our radius is 9 and the center is (2,-2,0).

5 0

3 years ago

In the double-slit experiment with electrons, the electrons arrive at the screen in a

Y_Kistochka [10]

Answer:

B. Wave-like way with a pattern that is wave-like

Explanation:

The double slit experiment when performed with electromagnetic waves, gives a pattern of light lines and dark areas, equally spaced.

In the case of electrons we must use Broglie's duality principle that states that all things have the characteristics of particles and waves together. The characteristic observed in a given experiment depends on the type of experiment, using the relationship

p = h /λ

Where p is the amount of motion of the particle and λ the wavelength associated with this particle

In consequence of the previous one to the screen it should arrive as a wave with a wave type pattern

Let's review the answer.

A) False. The pattern is wave type

B) True. The whole process is with undulating characteristics

C) False. A wave arrives

D) False. A wave arrives

4 0

3 years ago

When two or more forces act together on an object what do they combine to form

Daniel [21]

Without knowing anything about their magnitudes or directions, the only thing you can always say about thier combination is that it's the "net force" on the object.

7 0

4 years ago