(物理)電磁學問題
1.
two small objects,A and B,are fixed in place and separated by 2.00cm.
Object A has a charge of +1.00uC,and object B has a charge of
-1.00uC.How many electrons must be removed from A and put onto
B to make the electrostatic force that acts on each object an attractive
force whose magnitude is...
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1.
two small objects,A and B,are fixed in place and separated by 2.00cm.
Object A has a charge of +1.00uC,and object B has a charge of
-1.00uC.How many electrons must be removed from A and put onto
B to make the electrostatic force that acts on each object an attractive
force whose magnitude is 45.0N?
(A) 2.6*10^11 (B) 2.6*10^12 (C) 2.6*10^13 (D) 2.6*10^14
2.
A rectangle has a length of 2d and a height of d.Each of the following
three charges is located at a corner of the rectangle: + q1 (upper left
coener ), + q2 (lower right corner),and - q (lower left corner).
The net electric field at the (empty) upper right corner is zero.Find the
magnitude of q1 and q2.
(A) q1=0.895q , q2= 0.0716q (B) q1=0.0716q , q2=0.895q
(C) q1=0.0895q , q2=0.716q (D) q1=0.716q , q2=0.0895q
two small objects,A and B,are fixed in place and separated by 2.00cm.
Object A has a charge of +1.00uC,and object B has a charge of
-1.00uC.How many electrons must be removed from A and put onto
B to make the electrostatic force that acts on each object an attractive
force whose magnitude is 45.0N?
(A) 2.6*10^11 (B) 2.6*10^12 (C) 2.6*10^13 (D) 2.6*10^14
2.
A rectangle has a length of 2d and a height of d.Each of the following
three charges is located at a corner of the rectangle: + q1 (upper left
coener ), + q2 (lower right corner),and - q (lower left corner).
The net electric field at the (empty) upper right corner is zero.Find the
magnitude of q1 and q2.
(A) q1=0.895q , q2= 0.0716q (B) q1=0.0716q , q2=0.895q
(C) q1=0.0895q , q2=0.716q (D) q1=0.716q , q2=0.0895q
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