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worty [1.4K]
3 years ago
14

Mr. Chang's class participated in a science experiment where they placed three substances outside in the sunlight to determine w

hich substance would increase in temperature more quickly. How would the motion of the particles of each substance be described if they are allowed to sit in the Sun for a duration of 10 minutes?
Choices:

The particles do not change in motion because the substances are undisturbed.


The particles of each substance begin to speed up and move farther apart as the temperature increases.


The particles of each substance begin to slow down and move closer together as the temperature increases.


The particles of each substance speed up and slow down simultaneously, but remain in a fixed position as the temperature increases
Physics
1 answer:
Montano1993 [528]3 years ago
7 0

Answer:

B or D but im pretty sure it is D

Explanation:

When molecules are left in the sun, it heats up. When molecules heat up, the begin to vibrate rapidly. The sun is not constant as it could get blocked by clouds, so it would, at times, slow down the movement of the molecules. The answer is most likely D.

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irina1246 [14]

Answer:

a=13\ m/s^2

Explanation:

Given that,

Force, F = 52 N

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We need to find the acceleration of the object. We know that,

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Put the values,

a=\dfrac{F}{m}\\\\a=\dfrac{52}{4}\\\\a=13\ m/s^2

So, the acceleration of the object is equal to 13\ m/s^2.

5 0
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2.
koban [17]

The question is not well presented.

There is  ______ shift in sound  frequency for observers towards  whom the source is approaching.

Answer:

The  gap should be filled with an apparent upward

Explanation:

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The Doppler effect describes sound as an effect which is produced from a moving source of wave.

According to the Doppler effect;

When the source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching.

3 0
4 years ago
Help me for my homework
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Two objects moving with the same speed may not have the same velocity. Why?​
Nutka1998 [239]
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The higher the temperature of an object the
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4 0
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