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The figure shows wire 1 in cross section; the wire is long and straight, carries a current of 4.12 mA out of the page, and is at distance d₁ = 2.71 cm from a surface. Wire 2, which is parallel to wire 1 and also long, is at horizontal distance d₂ = 5.04 cm from wire 1 and carries a current of 7.13 mA into the page. What is the x component of the magnetic force per unit length on wire 2 due to wire 1? 1 Number i Units
A concave shaving mirror has a radius of curvature of +38.7 cm. It is positioned so that the (upright) image of a man's face is 2.38 times the size of the face. How far is the mirror from the face? Number i Units