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Zanzabum
3 years ago
15

Name three gases in the atmosphere

Physics
2 answers:
igomit [66]3 years ago
6 0
Oxygen
Nitrogen
Carbon Dioxide   (: 
4vir4ik [10]3 years ago
5 0
Nitrogen, argon, oxygen 

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Paha777 [63]

Answer:

a) Instantaneous rate at which the force does work on the object = -6 W

b) \texttt{Velocity of object,}\vec{v}=4\hat{j}

Explanation:

a) Given that

             \vec{F}=3\hat{i}-3\hat{j}

   and

            \vec{v}=-2\hat{i}+4\hat{k}

Instantaneous rate at which the force does work on the object is called power.

          Power is the dot product of force and velocity.

          P=\vec{F}.\vec{v}=(3\hat{i}-3\hat{j}).(-2\hat{i}+4\hat{k})=-6W

Instantaneous rate at which the force does work on the object = -6 W

b) Here given that    \vec{v}=-a\hat{j}

  Power = -12 W

  P=\vec{F}.\vec{v}=(3\hat{i}-3\hat{j}).a\hat{j}=-12W\\\\-3a=-12\\\\a=4\\\\\vec{v}=4\hat{j}

\texttt{Velocity of object,}\vec{v}=4\hat{j}

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3 years ago
The blocks shown in the pictures below are all made of wood. Which car will move the fastest?
Ne4ueva [31]

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The one with the less mass

Explanation:

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Help me, please
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Answer fast , is si unit newton/meter square or pascal or both
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Both

Explanation:

The S.I. unit of pressure is newton/meter square or pascal as both represent the same dimensional value.

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In California the pacific plate slides past the North American plate. If the pacific plate is moving at a speed of 5 centimeters
RUDIKE [14]

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2000years

Explanation:

We will either convert the distance to centimeters or speed to meters/second.

Converting distance to centimeters: 100 meters= 100*100centimeters =10000centimeters.

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3 years ago
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