Which of the following is not equal to 1 mm?
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A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 12 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the same direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
You have lenses with the following focal lengths: f = 25 mm, 50 mm, 100 mm, and 200 mm. Which lens would you use to get the highest-power magnifier? Which lens would you use to get the highest-power magnifier? 25 mm 50 mm 100 mm 200 mm Which pair of lenses would you use to get the highest-power microscope? Check all that apply. 25 mm 50 mm 100 mm 200 mm In what arrangement would you use these lenses to get the highest-power telescope? fo = 200 mm, fe= 25 mm fo = 25 mm, fe= 200 mm fo = 25 mm, fe= 50 mm fo = 50 mm, fe= 25 mm?
A long hollow cylindrical conductor (innerradius = 2.0 mm, outer radius = 4.0 mm) carries a current of 12 Adistributed uniformly across its cross section. A long wire whichis coaxial with the cylinder carries an equal current in the samedirection. What is the magnitude of the magnetic field 3.0 mm fromthe axis?
