Suppose a current is flowing in an infintessimally small diameter wire. The magnetic field strength at a given point is proportional to the current flow
and inversely proportional to the perpendicular distance to the wire. But this means
as the point approaches the wire, the magnetic field strength goes to infinity.
Something is not right. Please explain.

Which seasons are the northern and southern hemispheres experiencing in the image? it is summer in both the northern and southern hemispheres. it is summer in the northern hemisphere and winter in the southern hemisphere. it is winter in both the northern and southern hemispheres. it is winter in the northern hemisphere and summer in the southern hemisphere.

Which statement best describes how private industry decides where to spend the money on research and development

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)