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3 years ago

Cual es la respuesta a esta p'regunta.

Physics

1 answer:

laila [671]3 years ago

6 0

Answer:

Could you translate it to Korean or English...

Explanation:

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Want in own words please<br><br> What determines whether something is solid or liquid or gas

ale4655 [162]

Answer:

An object could be determined as solid:

-It doesn't change shape easily.

-when lots of heat applied till melting point, it would melt or thaw (basically turn into liquid).

-turn to pieces or bent when enough force applied to it.

-the molecules attached with each other by strong forces, creating strong bonds.

An object could be determined as liquid:

-It changes shaped based on the container.

-when lots of heat applied till boiling point, it would vaporize

-the molecules have weak bonds, creating a lot of spaces.

-when heat extracted from the liquid till freezing point, it would freeze/hardened (turn into solid)

An object could be determined as gas:

-it doesn't have any shape or form.

-if fills in the container.

-if lots of heat applied, its molecules are going to move, vibrate,and transist faster; increasing pressure and volume.

-The molecules have very weak bonds, creating spacious space.

-when the heat are being extracted till certain freezing point, it is going to turn into liquid, then solid.

5 0

4 years ago

1.A particle is moving up an inclined plane. Its velocity changes from 15m/s to 10m/s in two seconds. What is its acceleration?

FrozenT [24]

$\huge{ \underline{ \boxed{ \bf{ \blue{Solution:}}}}}$

<h3><u>Provided</u><u>:</u><u>-</u></h3>

Initial velocity = 15 m/s
Final velocity = 10 m/s
Time taken = 2 s

Accleration of the particle....?

<h3><u>How</u><u> </u><u>to</u><u> </u><u>solve</u><u>?</u></h3>

We will solve the above Question by using equations of motion that are:-

v = u + at
s = ut + 1/2 at²
v² = u² + 2as

Here,

v = Final velocity
u = Initial velocity
a = acceleration
t = time taken
s = distance travelled

By using first equation of motion,

⇛ v = u + at

⇛ 10 = 15 + a(2)

⇛ -5 = 2a

Flipping it,

⇛ 2a = -5

⇛ a = -2.5 m/s² [ANSWER]

❍ Acclearation is negative because final velocity is less than Initial velocity.

<u>━━━━━━━━━━━━━━━━━━━━</u>

5 0

4 years ago

What must be the diameter of a cylindrical 120-m long metal wire if its resistance is to be 6.0 ω? the resistivity of this metal

Free_Kalibri [48]

The resistance of the cylindrical wire is $R=\frac{\rho l}{A}$ .

Here $R$ is the resistance, $l$ is the length of the wire and $A$ is the area of cross section. Since the wire is cylindrical $A=\frac{\pi d^2}{4}$ . Rearranging the above equation,

$A=\frac{\rho l}{R}\\ \frac{\pi d^2}{4}=\frac{\rho l}{R}\\ d=\sqrt{\frac{4\rho l}{\pi R}}$

Here $l=120, R=6, \rho=1.68(10^{-8})$ .

Substituting numerical values,

$d=\sqrt{\frac{4(1.68)(10^{-8}) (120)}{\pi (6)}}\\ d=0.0006541$

Te diameter of the wire is $0.6541 mm$

7 0

4 years ago

Light travels slowest in high density media, faster in lower density media, and fastest in low density media.

lutik1710 [3]

Answer: C REFRACTION

Explanation: I took the test and got it right lol <3

8 0

2 years ago

Whitt is considered a prokaryotic cell

djverab [1.8K]

Microorganisms and all other living organisms are told to be procarotics

6 0

3 years ago