During Physical Change there would be a re-arrangements of atoms or molecules, changes of the arrangement may be change in the distance between atoms or molecules, change in the crystal form, .....etc
for example: water when heated it undergoes a Physical Change and turn into vapor, this means the heat cause the distance between water molecules to increase, so it transferred from the liquid form to the gas form.
NOTE that in Physical Change there is no change in the chemical structure and the material retains all its chemical properties, and no new compounds are produced.
again, A physical change is any change not involving a change in the substance's chemical identity. Matter undergoes chemical change when the composition of the substances changes: one or more substances combine or break up (as in a relationship) to form new substances.Physical changes occur when objects undergo a change that does not change their chemical nature. A physical change involves a change in physical properties. Physical properties can be observed without changing the type of matter. Examples of physical properties include: texture, shape, size, color, odor, volume, mass, weight, and density.
BUT in Chemical Change ( or Chemical Reaction ) there would be change in the chemical nature of the material undergoing a Chemical Change with the production of new compounds.
The time taken, and the distance travelled by the car before stop, will be 5.3 second and -53.3 m west.
<h3>What is the distance?</h3>
The length of the path traveled by the body is known as the distance covered by the body.
Distance is a 1-dimensional phenomenon. its unit is a meter(m). The distance can be found by the product of velocity and time.
The given data in the problem will be
u is the initial velocity =20m/sec
t is the time =?
d is the distance =?
From the Newtons second law;
The distance travelled before the car stop is,
Hence,the time taken, and the distance travelled by the car before stop, will be 5.3 second and -53.3 m west.
To learn more about the distance, refer to the link;
brainly.com/question/989117
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Answer:
the statement given is False.
Explanation:
The pressure is defined by
P = F / A
The force of the air is its weight,
P = W_air / A
The weight of an air column on us depends on the energy of the molecules that is related to the temperature
E = 3/2 K T
When the air is warmer it has more energy so the molecules can move more distance and therefore the average density of the gas decreases, as the density decreases, the weight of the column on us also decreases, therefore the pressure low.
The correct statement is: When the air is hotter it has less pressure than when the air is cold.
It is summary the statement given is False
Answer:
NA is replicated during the S phase (Synthesis phase) of Interphase.
Hope it helps!!!!!!!!!!
Any change in speed or direction of motion is acceleration.
Constant acceleration can mean ...
-- speeding up at a constant rate . . . gaining the same amount
of speed each second.
-- slowing down at a constant rate . . . losing the same amount
of speed each second.
-- changing direction at a constant rate . . . for example, going
around a circular path at a constant speed.
