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melomori [17]
3 years ago
6

Calculate the kinetic energy of a 2.2kg brick when it has a speed of 4.9m/s

Physics
2 answers:
Sloan [31]3 years ago
5 0

Answer:

26.4 j

Explanation:

Alborosie3 years ago
3 0

Answer:

Kinetic energy of the brick is 26.4 Joule

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Water flows through a cylindrical pipe of varying cross-section. The velocity is 3.0 m/s at a point where the pipe diameter is 1
Setler79 [48]

Answer:

The flow rate is  R =2.357 *10^{-4} \ m^3/s

Explanation:

From the question we are told that

    The velocity is v  =  3.0 \ m/s

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The  radius of the pipe is mathematically represented as

            r =  \frac{d}{2}

substituting values

            r =  \frac{0.01}{2}

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       R  =  v  * A

Where is the cross-sectional area of the pipe which is mathematically evaluated as

      A   = \pi r^2

substituting values

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     A   = 7.855 *  10^{-5} \ m^2

So

    R  =  3.0  *  7.855 *10^{-5}

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Does the air in our atmosphere have mass?
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f_{k1}=u*m1*g

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