3. A) Compare and contrast sound waves and electromagnetic waves. List 2 ways in which they are similar and 2 ways in which they are different.
B) What is the electromagnetic spectrum? How do Infrared and Radio waves differ and
how are they the same?

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to