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3 years ago

What causes changes in the state of matter?

Physics

2 answers:

vekshin13 years ago

6 0

Answer:

i think it's 1) because

Explanation:

Adding or removing energy from matter causes a physical change as matter moves from one state to another.

Komok [63]3 years ago

3 0

I thinks it’s 1 because adding or removing energy from matter that cause a physical change

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How does the kinetic energy of particles vary with temperature

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When the average kinetic energy of the molecules go up ( a rise in temperature) the average speed of the molecules increases, the molecules now on average have more kinetic energy .

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4 years ago

A baseball is thrown by the center fielder (from shoulder level) to home plate where it is caught (on the fly at eye level) by t

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3 years ago

A force of 6.0 N is applied horizontally to a 3.0 kg crate initially at rest on a horizontal frictionless surface. After the cra

Savatey [412]

Answer:

a. Yes, because the acceleration of the crate is 2.0 m/s².

Explanation:

Given

$Force = 6N$ --- f

$Mass = 3kg$ --- m

$Time = 1.5s$ --- t

$Velocity = 3.0m/s$ --- v

Required

Does the system support $F=ma$

Yes, it does and this is shown below

The crate is initially at rest; so:

$u = 0$

Using the first equation of motion

$v = u + at$

Substitute values for v, u and t

$3 = 0 + a*1.5$

$3 = 1.5a$

Make a the subject

$a = 3/1.5$

$a = 2$

Using $F = ma$

Substitute values for F and m

$6 = 3 * a$

Divide both sides by 3

$6/3 = 3/3 * a$

$2 = a$

$a = 2$

In both cases:

$a = 2$

<em>Hence, option (a) is correct.</em>

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3 years ago

A taxi starts from Monument Circle and travels 5 kilometers to the east for 5 minutes. Then it travels 10 kilometers to the sout

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4 years ago

At 96Â° F the saturation density of air is 0.04 kg/m3. If the weather report says the relative humidity is 90 % when the tempera

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Answer:

The value is $H = 0.036 \ kg/m^3$