3 years ago

A Danish astronomer who used the diameter of the earth's orbit in his calculation of the speed of light was .

Physics

2 answers:

finlep [7]3 years ago

7 0

Answer:

A danish astronomer who used the diameter of the earths orbit in his calculation of the speed of light was ROEMER.

Explanation:

Andrews [41]3 years ago

3 0

Roemer used the diameter of the earth's orbit in his calculation of the speed of light.

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A sample of an unknown liquid has a volume of 12.0mL and a mass of 6g. What is the density

Ne4ueva [31]

Density = Mass divided by Volume, or d = m/v.
So, replace the m and v with the amounts given:
d = 6/12.
Therefore, d = 0.5.

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3 years ago

Learning Goal: To practice Problem-Solving Strategy 30.1 Electromagnetic Induction. A coil of wire contains N turns and has an e

Helen [10]

Answer:

Time interval for which magnetic field reduced to ZERO is given as

$t = \frac{NB_0\pi a^2}{RI}$

Explanation:

As we know that the flux linked with one coil is given as

$\phi = B_0 A$

$\phi = B_0(\pi a^2)$

now total flux of all coils is given as

$\phi = NB_0\pi a^2$

now let say the flux is reduced to ZERO after time "t"

so as per Faraday's law EMF induced in the coil is given as

$EMF = \frac{NB_0\pi a^2 - 0}{t}$

now the current in the coil is given as

$I = \frac{EMF}{R}$

$I = \frac{NB_0\pi a^2}{Rt}$

so the time interval is given as

$t = \frac{NB_0\pi a^2}{RI}$

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3 years ago

If the magnification produced by a lens has a negative value, the image will be

drek231 [11]

Answer:

I think it's B, not quite sure tho.

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3 years ago

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An object is projected straight upward with an initial speed of 25.0 m/s

hoa [83]

Answer:

What's the question your asking?

Explanation:

It moves with an initial speed of 25.0 miles per second.

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3 years ago

Y=1/2 at^2 solve for t

Aloiza [94]

Explanation:

y = ½ at²

Multiply both sides by 2:

2y = at²

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t² = 2y/a

Take the square root of both sides:

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3 years ago