The magnetic field 40.0 cm away from a long, straight wire carrying current 2.00 a is 1.00 mt. (a) at what distance is it 0.100 mt? (b) what if? at one instant, the two conductors in a long household extension cord carry equal 2.00-a currents in opposite directions. the two wires are 3.00 mm apart. find the magnetic field 40.0 cm away from the middle of the straight cord, in the plane of the two wires. (c) at what distance is it one-tenth as large? (d) the center wire in a coaxial cable carries current 2.00 a in one direction, and the sheath around it carries current 2.00 a in the opposite direction. what magnetic field does the cable create at points outside the cable?

An internally reversible refrigerator has a modified coefficient of performance accounting for realistic heat transfer processes of where qin is the refrigerator cooling rate, qout is the heat rejection rate, and is the power input. show that copm can be expressed in terms of the reservoir temperatures tc and th, the cold and hot thermal resistances rt,c and rt,h, and qin, as where rtot rt,c rt,h. also, show that the power input may be expressed as 1.39 a household refrigerator operates with cold- and hot-temperature reservoirs of tc 5 c and th 25 c, respectively. when new, the cold and hot side resistances are rc,n 0.05 k/w and rh,n 0.04 k/w, respectively. over time, dust accumulates on the refrigerator’s condenser coil, which is located behind the refrigerator, increasing the hot side resistance to rh,d 0.1 k/w. it is desired to have a refrigerator cooling rate of qin 750 w. using the results of problem 1.38, determine the modified coefficient of performance and the required power input w under (a) clean and (b) dusty coil conditions. internally reversible refrigerator qout qin w high-temperature reservoir low-temperature reservoir th th,i tc,i tc high-temperature side resistance low-temperature side resistance w qin th tc qinrtot tc qinrtot copm tc qinrtot th tc

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

What is the major limitation to the light microscope?