If a 9 v battery with 4 ω contact resistance is used and the relay has 80 ω and the wire has 10 ω/mile, what is the maximum telegraph distance which will result in a 50 ma current through the relay circuit loop?

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

If the new moon happens on january 15th, what shape will it be on february 6th?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?