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Mandarinka [93]

2 years ago

8

A new conveyor system at the local packaging plant will utilize a motor powered mechanical arm to exertion average force of 890N

to push large crates a distance of 12 meters in 22 seconds. Determine the power output required of such a motor.

1 answer:

valkas [14]2 years ago

4 0

Answer:

power =( 890 N x 12 m ) / 22 s=

= 485 Watts

Explanation:

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Calculate the electric field at the center of a square

pantera1 [17]

Answer:

$E_y=1175510.2\ N.C^{-1}$

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Explanation:

Given:

side of a square, $a=52.5\ cm$

charge on one corner of the square, $q_1=+45\times 10^{-6}\ C$

charge on the remaining 3 corners of the square, $q_2=q_3=q_4=-27\times 10^{-6}\ C$

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$diagonal=74.25\cm=0.7425\ m$

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Now, electric field due to charges is given as:

$E=\frac{1}{4\pi\epsilon_0}\times \frac{q}{b^2}$

<u>For charge $q_1$ we have the field lines emerging out of the charge since it is positively charged:</u>

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$E_1=2938775.5\ N.C^{-1}$

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$E_2=E_3=E_4=9\times 10^9\times \frac{27\times 10^{-6}}{0.3712^2}$

$E_2=E_3=E_4=1763265.3\ N.C^{-1}$

<u> Now, net electric field in the vertical direction:</u>

$E_y=E_1-E_4$

$E_y=1175510.2\ N.C^{-1}$

<u>Now, net electric field in the horizontal direction:</u>

$E_y=E_2-E_3$

$E_y=0\ N.C^{-1}$

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