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3 years ago

12

What are 5 Non-Examples of Density

1 answer:

Maksim231197 [3]3 years ago

4 0

I'm not sure if there is five examples, but one easy one is light.

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D) 2,5 dm3 =... cm3= .... ml =...cc<br>

DerKrebs [107]

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2 years ago

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This is for physical science. Can someone help me?

Radda [10]

A. 320 g
B. 160 g
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3 years ago

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Review Questions

harina [27]

Answer:

Milky way is a galaxy . Milky way has a spiral shape . The Milky Way has a relatively low surface brightness due to the gases and dust that fills the galactic disk. it comprises of dust particles , 200 billion stars.
they are bounded into clusters due to gravitational force out there.
when you ask how is gravity important to the galaxy within universe then ask what hold the lump of solar system together in this great cosmic soup when whole universe is expanding ? yea , there is gravity . Hravity holds these objects together and today we have a cute solar system .
The galaxies are generally observed using shapes - some are eleptical , some are spiral and some are just irregular
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4 0

3 years ago

A box at rest has the shape of a cube 3.5 m on a side. This box is loaded onto the flat floor of a spaceship and the spaceship t

guapka [62]

Answer:

$V_o=25.725\ m^3$

Explanation:

Given:

sides of the cube, $a=3.5\ m$

speed of the cube with respect to the observer, $v=0.8c$

Since the relative velocity of the object is relativistic, so there will be a length contraction according to the observer:

$a_o=a\div\frac{1}{\sqrt{1-\frac{v^2}{c^2} } }$

where:

$a_o=$ observed length of the side along the direction of velocity

$a_o=3.5\div\frac{1}{\sqrt{1-\frac{(0.8c)^2}{c^2} } }$

$a_o=2.1\ m$ is the observed length of the cube edge only in the direction of the velocity due to relativistic effect of length contraction.

So the observed volume will be:

$V_o=a\times a\times a_o$

$V_o=3.5\times 3.5\times 2.1$

$V_o=25.725\ m^3$

5 0

3 years ago

A sound wave has a frequency of 510 Hz in air. Which of these is closest to the wavelength of this sound? (The speed of sound in

Dahasolnce [82]

Answer:

b) the length of car

Explanation:

This is because 520 divided by 343 m/s.) would equal the length of a car.

8 0

3 years ago