Answer:
The crumpled paper hits the ground first due to air resistance. The crumpled paper has less surface area than the flat paper, therefore the crumpled paper hits first.
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Complete Question
The complete question is shown on the first uploaded image
Answer:
The value is
Explanation:
From the question we are told that
The mass of the block is
The initial speed of the block before entering the rough section is
The time taken is t = 0.5 s
The speed with which the block leaves the rough section is
Generally from kinematic equation
=>
=>
=>
Generally the magnitude of the average frictional force is mathematically represented as
=>
=>
The negative sign show that the force is acting in the opposite direction to the direction of motion of the block
Answer:
The answer would be D.
Explanation:
Seven Things That Indicate a Chemical Change Is Occurring
Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas. ...
Formation of a Precipitate. ...
Color Change. ...
Temperature Change. ...
Production of Light. ...
Volume Change. ...
Change in Smell or Taste.
D&C Are the answers sorry if it's too short.