Thallium is the new element
TI is its symbol
Atomic no. Is 81
Mass is 204.38
the correct answer is thermal or light
<span>Dry ice is frozen carbon dioxide. It is easy to assume that the fog surrounds dry ice is carbon dioxide returning to it's gaseous however, you can not see that process. The vapors you see is the water molecules in the air condensing as a result of the cooling or energy removal by the dry ice. When energy is removed from water molecules they become colder and move slower than water in a gaseous. Similar to clouds in the air, the water condenses into a form that you can see.</span>
Car B and E are speeding up, while car C is slowing down.
<h3>
What is Velocity ?</h3>
Velocity is the directional speed of a object in motion as an indication of its rate of change in position as observed from a particular frame of reference.
Step-by-step explanation :
Acceleration (a) is the rate of change of velocity with time.
It is calculated by dividing the change in velocity (Δv) with the time taken for the change to occur.
In this question , the time is 10 sec in all cases.
We can divide the velocity in km/h by 3.6 to convert to m/s
In Car A
Δv = 8.33-8.33 = 0m/s
t = 10s
a = 0 m/s² ⇒car is moving with same speed and in the same direction
Car B
Δv = 5.55-0 = 5.55
t = 10
a = 5.55 / 10 = 0.555 m/s² ⇒car is speeding up
Car C
Δv = 0 - 8.33 = -8.33 m/s
t = 10
a = - 8.33/10 = -0.833 m/s² ⇒car is slowing down
Car D
Δv = 0-0 = 0
t = 10s
a = 0/10 = 0 m/s² ⇒car is at rest
Car E
Δv = 8.33 - 5.55 = 2.78
t = 10
a = 2.78/10 = 0.278 m/s²⇒car is speeding up
Learn More about acceleration here ;
brainly.com/question/13154163
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