Two long straight parallel lines, #1 and #2, carry uniform positive linear charge densities. The charge density on line #2 is twice as great as the charge density on line #1
The locus of points where the electric field due to these lines is zero is A) along a line between the lines closer to line #2 than line #1.
B) at a point midway between the lines.
C) along a line perpendicular to lines #1 and #2.
D) along a line between the lines closer to line #1 than line #2.
D
You might also like to view...
A ray of light is incident on the mid-point of a glass prism surface at an angle of 23.4° with the normal. For the glass, n = 1.60, and the prism apex angle is 51.8°. What is the angle of incidence at the glass-to-air surface on the side opposite where the ray exits the prism?
a. 39.5° b. 14.4° c. 37.4° d. 28.4° e. 42.7°
Which of the following gases is monatomic?
a. Nitrogen b. Argon c. Hydrogen d. Chlorine
Imagine a downhill race between four objects each of mass M. One object such as a skier (P) is best modeled as a particle (shown as a small flat object) translating down the hill. The other objects are modeled as a solid cylinder (C), hoop (H) and a solid sphere (S) each of radius R rolling down the hill without slipping. All four objects start from rest a t a height h. Assuming mechanical energy losses due to friction may be ignored, determine the order in which the objects cross the finish line. Use their letter designation: P, C, H and S and arrange them from first to last to arrive at the finish line.
A +5.0-µC point charge is 12 cm from a -5.0-µC point charge
What is the magnitude of the electric field they produce at the point on the line connecting them where their electric potential (relative to infinity) is zero? (k = 1/4??0 = 9.0 × 109 N ? m2/C2 ) A) 0 N/C B) 12.5 MN/C C) 0.75 MN/C D) 25 MN/C E) 1.5 MN/C