Look at the diagrams below, showing mystery element A and mystery element D. How many valence electrons does mystery element A contain? Based on this, would it want to gain or lose electrons? Why is this? How many valence electrons does mystery element D have? Based on this, would it want to gain or lose electrons? Why is this?

Identify the type of synthetic material used in each object

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

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?