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olga_2 [115]
3 years ago
10

One particle has a charge of -1.87 x 10-9 C, while another particle has a charge of -1.10 x 10-9 C. If the two particles are sep

arated by 0.05, what is the electromagnetic force between them? The equation for Coulomb's law is F = k9192, and the constant, k, equals 9.00 x 10-9 Nm2/C2 pa 2
A. 3.70 x 10-7 N
B. -7.41 x 10-6N
C. -3.70 x 10-7 N
D. 7.41 x 10-6 N​
Physics
1 answer:
bogdanovich [222]3 years ago
5 0

Answer:D 7.41 x 10-6 N

Explanation: AP*X

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Answer:

The pressure is p_1 = 4051.4 \ Pa

Explanation:

From the question we are told that

     The gauge pressure at the mouth is  p_1

     The radius of the column is  r_2 =  4 \ mm  =  0.004 \ m

    The speed of the liquid outside the body is  v_2 =  3.1 \ m/s

      The area of the column is  A_2

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Generally according to continuity equation

       v_1 A_1 =  v_2 A_2

=>       v_ 1 = v_2 *  \frac{A_2}{A_1}

=>      v_ 1 = 3.1 *  \frac{1}{10}

=>        v_ 1 = 0.31 \ m/s

So

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=>   \pi * r_1^2 = 10(\pi * r_2^2)

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substituting values

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Now the height of inside the mouth is  h_1 =  d =  2r_1 =  2* 0.04 =  0.08\ m

Now the height of the column is  h_2 =  d =  2r_2 =  2* 0.004 =  0.008\ m

Generally according to Bernoulli's  equation

        p_1 =  [\frac{1}{2}  \rho v_2^2 + h_2 \rho g +p_2] -[\frac{1}{2} \rho * v_1^2 + h_1 \rho g ]

Now  \rho =  1000 \ kg m^{-3} which is the density of water

        p_2 is the gauge pressure of the atmosphere which is  zero

 So

       p_1 =  [(0.5 * 1000 * (3.1)^2) +(0.008 * 1000 * 9.8) + 0]-

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Answer:

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Explanation:

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