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weqwewe [10]
3 years ago
6

If you took the same amount (the exact same volume), of a piece of crust and compared it to a piece of the core, which one would

be heavier for its size? Why?
Physics
1 answer:
stepan [7]3 years ago
5 0

Answer:

The answer is below

Explanation:

Density is the amount of matter contained in a certain space. Objects that are dense are very heavy compared to their size while objects that are not dense are very light compared their size. Therefore most dense objects sink when placed in water while less dense objects floats in water.

Density is the ratio of mass to volume. It is given by:

Density = mass / volume

Crust has a density of 2.2 - 2.9 g/cm³ while core has a density of  9.9 - 12.2 g/cm³ for its outer and 12.8 - 13.1 g/cm³ for its inner.

Therefore if the same amount of a piece of crust is compared to a piece of core, the core would be more heavier since it has more density than the crust.

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Unpolarized light with intensity 370 W/m2 passes first through a polarizing filter with its axis vertical, then through a second
vampirchik [111]

To solve this problem it is necessary to apply the concepts given by Malus regarding the Intensity of light.

From the law of Malus intensity can be defined as

I' = \frac{I_0}{2} cos^2 \theta

Where

\theta =Angle From vertical of the axis of the polarizing filter

I_0 = Intensity of the unpolarized light

The expression for the intensity of the light after passing through the first filter is given by

I = \frac{I_0}{2}

Replacing we have that

I = \frac{370}{2}

I = 185W/m^2

Re-arrange the equation,

I'= \frac{I_0}{2}cos^2\theta

Re-arrange to find \theta

cos^2\theta = \frac{2I'}{I_0}

cos^2\theta = \frac{2*138}{370}

\theta = cos^{-1}(\sqrt{\frac{2*138}{370}})

\theta = 0.5282rad

\theta = 30.27\°

The value of the angle from vertical of the axis of the second polarizing filter is equal to 30.2°

4 0
3 years ago
Hi how do i run faster
Andrei [34K]

Answer:

Creatine is a great option , its not gonna help long term running ; but a great boost when you first start the run/jog.

Now to run faster you have to build great endurance and that is done through constant exercise running and stamina work outs such as sports , sprints calistetics etc.

Explanation:

Its not a simple 1 time thing and your suddenly , it takes drive and motivation !

Hope i was able to help you out ! Have a great day :)

7 0
2 years ago
Conduction is usually faster/slower in liquids and certain solids than in gases.
KIM [24]
Conduction is slower in liquids and gases.

Liquids it is convection which transmits more heat.. quicker...

Materials which are good conductors of thermal energy are called thermal conductors.

metals are good thermal conductors.


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3 years ago
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scZoUnD [109]
<span>Generally speaking, the level of molecular motion is highest in gases, where molecules move around freely in space, bouncing off of each other, and lowest in solids, where molecules are bound together in a rigid structure. As such, the answer would be A; "the molecules in air move more than the molecules in wood".</span>
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3 years ago
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The first person to map the Milky Way Galaxy using radio waves was
Art [367]

Answer:B

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