<span>Copernicus decided this with more of an educated guess than anything. For example is when your standing right next to a plane it's huge Right? Well when it's flying it looks really small. He used the same reasoning for stars. Since it looks small it must be farther away.</span>

8 0

3 years ago

One of the characteristics of the planet mars that makes it very different from earth is that it does not have a large magnetic

Ket [755]

Answer:

It is most likely solid.

Explanation:

8 0

3 years ago

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A long electric cable is suspended above the earth and carries a current of 345 A parallel to the surface of the earth. The eart

jok3333 [9.3K]

Answer:

0.906 N

Explanation:

Formula for magnetic force acting on current carrying cable:

$F = IBLsin(\theta)$

Where I = 345A is the current in the wire, B = $5.6*10^{-5} T$ is the magnetic magnitude generated by Earth. L = 46.9 m is the cable length. $\theta = 88.2^o$ is the angle between vector B and cable direction.

$F = 345*5.6*10^{-5}*46.9*sin(88.2^o)$

$F = 0.906 N$

7 0

3 years ago

Which type of central heating system involves fans and ducts to circulate warm air?

satela [25.4K]

Forced-Air would be the type of central heating system

3 0

3 years ago

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