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Aserty910
@Aserty910
August 2022
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Помогите с физикой,срочно! ПОЖАЛУЙСТА
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Verified answer
F=k*q1*q2/(r1+r2)^2=
=8,98*10^9*(-3*10^(-9))*(-5*10^(-9))/(0,3)^2=
1,5E-06
Н
fi_а=k*q1/r1+k*q2/r2=
=8,98*10^9*(-3*10^(-9))/0,2+8,98*10^9*(-5*10^(-9))/0,1=
-583,7
В ~-584В
E_а=-d/dx(fi_а)=-d/dr1(fi_а)*dr1/dx-d/dr2(fi_а)*dr2/dx
=k*q1/r1^2*1+k*q2/r2^2*(-1)=k*q1/r1^2-k*q2/r2^2=
=8,98*10^9*(-3*10^(-9))/0,2^2-8,98*10^9*(-5*10^(-9))/0,1^2=
3816,5
В/м ~
~ 3817В/м
fi_b=k*q1/r3+k*q2/(r1+r2+r3)=
=8,98*10^9*(-3*10^(-9))/0,15+8,98*10^9*(-5*10^(-9))/(0,45)=
-279,378
В ~ -280 В
E_d=-d/dx(fi_b)=-d/dr3(fi_b)*dr3/dx-d/d(r1+r2+r3)*d(r1+r2+r3)/dx
=k*q1/r3^2*(-1)+k*q2/(r1+r2+r3)^2*(-1)=-k*q1/r3^2-k*q2/(r1+r2+r3)^2=
=-8,98*10^9*(-3*10^(-9))/0,15^2-8,98*10^9*(-5*10^(-9))/(0,45)^2=
1419,062
В/м ~
~1419В/м
1 votes
Thanks 1
Aserty910
Огромное спасибо,вы мастер)
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Answers & Comments
Verified answer
F=k*q1*q2/(r1+r2)^2==8,98*10^9*(-3*10^(-9))*(-5*10^(-9))/(0,3)^2=1,5E-06 Н
fi_а=k*q1/r1+k*q2/r2=
=8,98*10^9*(-3*10^(-9))/0,2+8,98*10^9*(-5*10^(-9))/0,1=-583,7В ~-584В
E_а=-d/dx(fi_а)=-d/dr1(fi_а)*dr1/dx-d/dr2(fi_а)*dr2/dx
=k*q1/r1^2*1+k*q2/r2^2*(-1)=k*q1/r1^2-k*q2/r2^2=
=8,98*10^9*(-3*10^(-9))/0,2^2-8,98*10^9*(-5*10^(-9))/0,1^2=3816,5В/м ~
~ 3817В/м
fi_b=k*q1/r3+k*q2/(r1+r2+r3)=
=8,98*10^9*(-3*10^(-9))/0,15+8,98*10^9*(-5*10^(-9))/(0,45)=-279,378В ~ -280 В
E_d=-d/dx(fi_b)=-d/dr3(fi_b)*dr3/dx-d/d(r1+r2+r3)*d(r1+r2+r3)/dx
=k*q1/r3^2*(-1)+k*q2/(r1+r2+r3)^2*(-1)=-k*q1/r3^2-k*q2/(r1+r2+r3)^2=
=-8,98*10^9*(-3*10^(-9))/0,15^2-8,98*10^9*(-5*10^(-9))/(0,45)^2=1419,062В/м ~
~1419В/м