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kvasek [131]
3 years ago
7

PLEASE HELP WILL GIVE BRAINLIEST!!!!!!!!!

Physics
2 answers:
Natasha2012 [34]3 years ago
7 0

<u>Your answer is 98 N</u> (g = -9.8 m/s^2) <u>Disregard the negative sign</u> so you get 9.8 <u>remove the decimal and your answer is 98 N.</u>

<u>(I took the test 98 N is correct)</u>

jonny [76]3 years ago
5 0

98 N is the answer. It is as 10 kg

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A 70 kg man's arm, including the hand, can be modeled as BIO 75-cm-long uniform rod with a mass of 3.5 kg. When the man raises b
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Answer:

  Δy = 7.1 cm

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            y_{cm} = 1 /M ∑m_{i}  y_{i}i

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Let's apply this equation to our case

We locate the reference system on the shoulders

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            y = -75/2 = 37.5 cm

With arms down

            y_{cm} = 1/70 (63 y₀ - 3.5 37.5 - 3.5 37.5)

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With arms up

          y_{cm}’= 1/70 (63 y₀ + 3.5 y + 3.5 y)

          y_{cm}’= 1/70 (63y₀ + 7 35.5)

let's subtract the two equations

        y_{cm}’ - y_{cm} = 1/70 2 (7 35.5)

         Δy = y_{cm}’ - y_{cm} = 2 7 35.5 / 70

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7 0
3 years ago
A particle with charge 7.76×10^(−8)C is moving in a region where there is a uniform 0.700 T magnetic field in the +x-direction.
kodGreya [7K]

Answer:

The  z-component of the force is  \= F_z  =  0.00141 \ N    

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From the question we are told that

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v_y  =  -2.61*10^{4}\ \r j  \ m/s

           The  velocity of the particle toward the z-direction is

v_y  =  -5.85*10^{4}\ \r k  \ m/s

Generally the force on this particle is mathematically represented as

          \= F  =  q (\= v   X  \= B )

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          \= F  =  q ( v_x \r  i + v_y \r  j  +  v_z \r k  )  \ \ X \ (  \= B i)

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Note :  The  cross-multiplication template of unit vectors is  shown on the first uploaded image  ( From Wikibooks ).

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Answer:

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