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Nataly [62]
3 years ago
6

Please Help I'll Make You Brainliest

Physics
1 answer:
sergij07 [2.7K]3 years ago
7 0
{Answer}
A- (10kg sphere and 30m)

{I hope this helps :) }
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A jewellery shop owner has two identical clear gemstones but cannot remember which one is diamond and which one is rutile. Rutil
pantera1 [17]

We know

\boxed{\sf n_{21}=\dfrac{C}{V}}

How he find:-

The owner will measure speed of light through the index(Diamond or rutile).Then using calculations he fill find which is the velocity of diamond or rutile

<h3> For diamond</h3>

\\ \sf\longmapsto n_D=\dfrac{C}{V_D}

\\ \sf\longmapsto 2.4=\dfrac{3\times 10^8ms^{-1}}{V_D}

\\ \sf\longmapsto V_D=\dfrac{3\times 10^8ms^{-1}}{2.4}

\\ \sf\longmapsto V_D=1.25\times 10^8ms^{-1}

\\ \sf\longmapsto V_D=125\times 10^6ms^{-1}

<h3>For rutile</h3>

\\ \sf\longmapsto n_R=\dfrac{C}{V_R}

\\ \sf\longmapsto V_R=\dfrac{C}{n_R}

\\ \sf\longmapsto V_R=\dfrac{3\times 10^8ms^{-1}}{2.9}

\\ \sf\longmapsto V_R=1.03\times 10^8

\\ \sf\longmapsto V_R=103\times 10^6ms^{-1}

5 0
3 years ago
If hydrogen and helium are the most abundant elements in the unoverse , then why are living organisms composed primarily of carb
Mumz [18]

Answer:

Most of materia isnt life.

Explanation:

The living organisms (life) aren't the most abundant thing in universe.

Hydrogen and helium are present in everywhere, but life isn't.

There is no reason to think because we have a lot of a thing, the life must be made for this thing.

The organic life just can exists because some mysterious properties about carbon, that is the basic foundation of life, carbon is a special element, why? We don't know, actually, it's a huge problem for science discover why the carbon can makes life be possible and other elements can't. But we know is this element that makes life possible.

So, note there isn't relation about the quantity of a material in Universe and the life constituition. In addition, look around, organic materials are very rare in Universe, Earth is one in lots of places and in most of this places there isn't sign of life.

Even in Earth the life looks abundant, in Universe it isn't, the same way in Universe the Hydrogen and Helium are abudant, in Earth isn't soo.

3 0
3 years ago
A 100.0-kg bakery sign hangs from two thin cables as shown.
harina [27]

Answer:

1. T₁ = 500 N

2. T₂ = 866 N

Explanation:

Please see attached photo for the diagram.

Thus, we can obtain obtained the value of T₁ and T₂ as follow:

1. Determination of T₁

Angle θ = 30

Hypothenus = 100 kg

Opposite = T₁ =?

Sine θ = Opposite /Hypothenus

Sine 30 = T₁ / 100

Cross multiply

T₁ = 100 × Sine 30

T₁ = 100 × 0.5

T₁ = 50 Kg

Multiply by 10 to express in Newton

T₁ = 50 × 10

T₁ = 500 N

2. Determination of T₂

Angle θ = 60

Hypothenus = 100 kg

Opposite = T₂ = ?

Sine θ = Opposite /Hypothenus

Sine 60 = T₂ / 100

Cross multiply

T₂ = 100 × Sine 60

T₂ = 100 × 0.8660

T₂ = 86.6 Kg

Multiply by 10 to express in Newton

T₂ = 86.6 × 10

T₂ = 866 N

5 0
3 years ago
Why the magnetic field line doesn't cross each other? ​
riadik2000 [5.3K]

Answer:

The main reason why the magnetic field lines do not cross each other is because of the resultant force (the single force) on a north or south pole at any one point on earth can only be in one direction...

Explanation:

This means that if you were to have a compass it needle cannot be showing two different directions. THIS MEANS THAT THE MAGNETIC FORCES ACTING FROM POLE TO POLE ACTS ONLY IN ONE DIRECTION, NOT 2

HEY, HOPE THIS HELPS!!

7 0
4 years ago
Describe the current atmosphere on Mars. What evidence suggests that it must have been different in the past?
alina1380 [7]

Answer:

The evidence of water that once was on mars

Explanation:

The martian atmosphere consists mostly of carbon dioxide, but is very thin, less than 1% of Earth's atmosphere. However, the strong evidence of water on Mars in the past that our missions have found means that the atmosphere must have been thicker and warmer, or water would have evaporated away very quickly.

3 0
3 years ago
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