. The banner over the finish line of a running race is 400. centimeters long and 86 centimelers isigh. What is the length and width of the banner?

Which notation is used to represent an alpha particle? a. b. c. d.

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?

Why do atoms emit energy of only specific wavelengths