By how much do the critical angles for red (660 nm) and blue (470 nm) light differ in crown glass surrounded by air

Iflow from a warmer object to a cooler object until both objects are the same temperature what am i?

If y gets smaller as x gets bigger and y have an relationship?

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?