What is the purpose of the ism/wlan indicator light on the backplane of the router? what does it refer to?

In the first law of thermodynamics, triangle e=q-w, what does q stand for

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?

The radius of an atom is closest in size to a