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3 years ago

How is temperature related to the physical change of asubstance

Physics

2 answers:

blagie [28]3 years ago

4 0

Answer:

~~Now, you have left your question very open ended and didn't ask for any particular kind of answer so I'll do my best to get what you're looking for.~~

A physical change in a substance doesn't change what the substance is. It can possibly melt or freeze an object. I mean heat makes things expand while cooling makes them retract.... In chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

zhuklara [117]3 years ago

4 0

Eg. lets say you have any type of food (lets say chocolate a hard block of one) amd you heat it up it’s obviously going to change the way it is instead of being in its orgianl form it might be melted or gooey, and when you cool it might change shape or texture

So pretty much temperatures can chamge any type of substance into being anything frim mushy, hard, soft, melted,solid, u know

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3 years ago

What is the mass moment of inertia of a 20kg sphere with a radius of 0.2m about a point on the sphere's perimeter

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Answer:

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3 years ago

Calculate the magnitude of the gravitational force exerted by the Moon on a 79 kg human standing on the surface of the Moon. (Th

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Answer:

F= 134.92 N

Explanation:

Given that

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$F=G\dfrac{Mm}{R^2}$

Now by putting the values in the above equation we get

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3 years ago

A car speeds past you sounding its horn at a frequency of 1000Hz. The frequency you hear:

ki77a [65]

Answer:

f' =1064.1025 Hz

Explanation:

We know that from doppler's effect

$f'=\frac{v+v_0}{v-v_s}f$

f'= observed frequency

f= actual frequency =1000 Hz

v= velocity of sound waves = 332 m/s

v_o= velocity of observer =0

v_s= velocity of source. ( let velocity of car be 20 m/s)

therefore,

$f'=\frac{332+0}{332-20}\times1000$

f' =1064.1025 Hz

3 0

3 years ago

How is temperature related to the physical change of asubstance​

How is temperature related to the physical change of asubstance